DEV Community: Sadique Mannan

Saily eSIM Review What to Know Before Using It for Travel

Sadique Mannan — Sun, 27 Sep 2026 22:27:57 +0000

If you're traveling internationally, an eSIM can be a convenient way to get mobile data without purchasing a physical SIM after you arrive.

Saily is a travel eSIM service that offers plans for travelers in different destinations. Available plans vary by country, data allowance, and validity.

How Does Saily Work?

Saily lets you purchase and install an eSIM before your trip.

The basic process is:

Choose your destination.
Select a suitable plan.
Purchase and install the eSIM.
Follow the activation instructions.
Use the eSIM for mobile data while traveling.

Your phone needs to support eSIM and should be carrier-unlocked.

Saily Plans and Pricing

There isn't one fixed Saily price for every destination.

The price and available data depend on the destination and plan you choose. Depending on the country, Saily offers different data allowances, validity periods, and plan types.

Regional options can also be useful if your trip includes multiple countries.

Before purchasing, check the exact plan available for your destination rather than relying only on a starting price.

Is Saily Easy to Set Up?

One useful aspect of a travel eSIM is that you can prepare it before leaving home.

Saily provides installation instructions through its app. You'll generally need an internet connection during setup, and your device must support eSIM technology.

Installing the eSIM before your trip can also help you avoid looking for a physical SIM immediately after landing.

What Should You Check Before Buying?

Before choosing a Saily plan, check:

Whether your destination is supported
Whether your phone supports eSIM
Whether your phone is carrier-unlocked
How much data you expect to use
Whether the validity period covers your trip
Whether you need a country-specific or regional plan

These checks can help you avoid choosing a plan that doesn't match your trip.

Read the Full Saily Review

For a more detailed look at Saily's plans, features, setup, and overall experience, you can read our Saily eSIM review on BeingOptimist.

Check Saily's Current Plans

If you want to check the current Saily options for your destination:

Check Saily eSIM plans

Final Thoughts

Saily can be a practical option if you want to arrange mobile data before traveling instead of purchasing a physical SIM after arrival.

The right plan depends on your destination, trip duration, expected data usage, and device compatibility.

Disclosure: This article contains an affiliate link. If you purchase through the link, BeingOptimist may earn a commission at no additional cost to you.

Using One eSIM Across Multiple Countries: What Travelers Should Know

Sadique Mannan — Thu, 24 Sep 2026 21:53:21 +0000

Traveling through several countries can make mobile connectivity complicated. Buying a new SIM in every destination isn't always convenient, especially when you're moving between countries during the same trip.

A multi-country eSIM can make things simpler by giving you mobile data across multiple supported destinations without changing physical SIM cards.

Why Use a Multi-Country eSIM?

A multi-country eSIM can be useful for:

International trips covering several countries
Business travel
Backpacking and long trips
Frequent travelers
Digital nomads
Anyone who wants mobile data ready before landing

You can also keep your regular SIM in your phone while using the eSIM for mobile data, depending on your device and carrier.

If you're also interested in using a travel eSIM while working abroad, you can read my Using a Travel eSIM for Mobile Data While Working Abroad guide.

How eSIM.dog WorldPass Works

eSIM.dog offers local and regional eSIM plans, along with WorldPass for travelers who need connectivity across multiple countries.

WorldPass is designed as a global mobile-data option. According to eSIM.dog, it covers 187 countries, with 117 countries offering 5G, along with hotspot support and satellite-network connectivity where supported.

The plan is currently listed at $15 per month.

Check eSIM.dog WorldPass

How Do You Set It Up?

The process is straightforward:

Choose your plan → Purchase → Install the eSIM → Connect when you arrive.

You receive the eSIM digitally, so there is no physical SIM card to collect or replace.

Before purchasing, make sure your phone supports eSIM and is carrier-unlocked.

It's also a good idea to install the eSIM before leaving home while connected to reliable Wi-Fi.

What Should You Check Before Buying?

A global eSIM isn't automatically the right choice for every trip.

Before purchasing, check:

Whether every country on your itinerary is covered
Plan price and validity
Data conditions
5G availability
Hotspot support
Your device compatibility
Any restrictions that apply to specific destinations

Coverage and network availability can vary by country, so check the current WorldPass details before your trip.

Is One eSIM Better for Multi-Country Travel?

If you're visiting several countries, using one eSIM can be more convenient than purchasing and installing a separate SIM for every destination.

However, if you're visiting only one country for a short period, a local or country-specific eSIM may be more suitable.

The important thing is to match the plan to your itinerary and expected data usage.

Get 5% Off eSIM.dog

If you decide to use eSIM.dog, you can get 5% off with the code:

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Disclosure: This article contains an affiliate link. If you purchase through it, I may earn a commission at no additional cost to you.

Traveling for work? Learn how a travel eSIM can help you stay connected to essential tools, communication apps, and online services—and what to check before buying.

Sadique Mannan — Thu, 24 Sep 2026 21:25:55 +0000

Sadique Mannan

Sep 24

Using a Travel eSIM for Mobile Data While Working Abroad

#webdev #productivity #devops

2 min read

Using a Travel eSIM for Mobile Data While Working Abroad

Sadique Mannan — Thu, 24 Sep 2026 21:25:06 +0000

What developers and remote workers should know before choosing a travel eSIM.

Working abroad often means depending on a stable internet connection. Hotel Wi-Fi may not always be reliable, and buying a local SIM can take time.

A travel eSIM provides another option: arrange your mobile data before traveling and use it when you arrive.

Why Use a Travel eSIM?

For developers and remote workers, mobile data can be useful for:

Accessing GitHub and online documentation
Checking cloud dashboards
Using Slack, Teams, and email
Joining video meetings
Using maps and other travel apps
Having a backup connection when Wi-Fi fails

It can also provide a convenient connection when moving between destinations.

MyEsimGlobal as a Travel Option

MyEsimGlobal offers eSIM plans covering 190+ destinations.

Depending on the destination, you can choose from country-specific and regional plans, as well as fixed-data and unlimited-data options.

This makes it possible to select a plan based on your destination and expected usage instead of relying on traditional roaming.

Setting Up the eSIM

The setup is relatively simple:

Choose a plan → Purchase → Install the eSIM → Connect when you arrive.

MyEsimGlobal provides an eSIM QR code or installation option after purchase. You can install the eSIM before your trip while connected to Wi-Fi.

Your phone needs to support eSIM and should be carrier-unlocked.

When you arrive, select the travel eSIM for mobile data and follow the activation instructions.

Check These Things Before Buying

If you plan to use an eSIM for work, don't choose a plan based only on price.

Check:

Destination coverage
Data allowance
Validity period
Network availability
Hotspot support
High-speed limits on unlimited plans
Device compatibility

For example, some unlimited plans can have a daily high-speed allowance before speeds are reduced.

Final Take

A travel eSIM isn't a replacement for every internet connection, but it can be a useful primary or backup connection when working abroad.

MyEsimGlobal is one option for travelers who want to arrange mobile data before leaving home, with plans available across 190+ destinations.

Choose the plan according to your destination, trip length, and expected data usage.

Get 10% Off MyEsimGlobal

If you want to try MyEsimGlobal, use:

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for 10% off your eSIM purchase.

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Disclosure: This article contains an affiliate link. If you purchase through it, I may earn a commission at no additional cost to you.

Is ServerByt Good for WordPress My 6‑Month Performance Review

Sadique Mannan — Tue, 21 Apr 2026 14:57:50 +0000

If you’ve ever migrated a WordPress site, you know how painful slow hosting can be. For years I bounced between popular providers, but my sites still felt sluggish once I added real traffic, plugins, and page builders.

Six months ago, I decided to test ServerByt on a real WordPress project to see whether this budget‑friendly host could actually handle my SEO‑heavy sites. In this review, I’ll share exactly what I found: speed tests, uptime, pros, cons, and whether I’d trust it for serious WordPress blogs.

Who should consider ServerByt for WordPress

ServerByt isn’t trying to be a beginner‑friendly site builder like Wix. It’s better suited for bloggers, marketers, and small businesses who already use WordPress and want fast, affordable hosting without paying for expensive managed plans.

If your site relies on SEO, blog content, or affiliate posts, you’ll care more about page speed, uptime, and support than fancy dashboards. That’s exactly how I evaluated ServerByt over these six months.

My 6‑month WordPress setup on ServerByt

For this test, I hosted a WordPress site built with Astra theme, Elementor website builder, and around 12 + plugins, including caching and SEO tools. The site receives roughly 5K monthly visits and uses a mix of long‑form articles and tool pages.
I signed up for the ServerByt Blaze plan hosted in their data center Mumbai location. The plan includes Unlimited SSD Webspace, Unlimited Monthly Bandwidth, Edge Caching For Speed plus a free SSL certificate, CDN, and email accounts.

To track performance, I monitored uptime with UptimeRobot and ran regular tests using PageSpeed Insights and GTmetrix.

Real‑world performance for WordPress

Over six months, my WordPress site on ServerByt maintained average uptime close to the promised 99.9%, with only a few short interruptions. Page load times stayed in the 2 second range on GTmetrix from Gurugram even on posts with multiple images and scripts.

On the front end, the difference compared to my previous host was obvious: pages felt snappier, and I didn’t see the random slowdowns I was used to during peak times. For a budget host, this level of consistency is impressive.

WordPress‑specific features and usability

ServerByt supports one‑click WordPress installation, automatic SSL, and basic caching, so setting up a new site is straightforward even if you’re not a sysadmin. The custom panel is cleaner than classic cPanel, though if you’re used to cPanel you’ll need a few days to adjust.
Where it shines is day‑to‑day reliability: updating themes, installing plugins, and taking backups felt smooth, and I didn’t run into memory errors or random 500 errors that I’ve seen on overloaded shared hosts in this price range.

Pricing and value for WordPress sites

ServerByt’s plans currently start around $1/month or roughly ₹699/ with annual billing, which is far cheaper than most managed WordPress providers while still including SSD storage, free SSL, and 24/7 support. Even when you move up to higher tiers for more resources, pricing stays friendly for bloggers and small businesses.

For my WordPress setup, the Blaze plan offered enough RAM and storage that I didn’t hit resource limits, even when a couple of posts went semi‑viral through search and social.

Support experience

During these six months, I contacted support through Chat support and by raising tickets multiple times for issues like migration, SSL, staging. Response times averaged around 5 to 10 minuts, and agents resolved most issues in a single interaction or tool minimum 1 day.

I wouldn’t call it premium enterprise‑level support, but for a low‑cost host, the combination of responsiveness and technical understanding was better than I expected.

Pros and cons for WordPress

*Pros
*

Good performance for typical WordPress blogs and small business sites at a budget price.
SSD storage and free SSL on entry plans.
Simple one‑click WordPress installation and easy management for most users.
Helpful support relative to the price point.

*Cons
*

“Unlimited” marketing claims are still limited by fair‑use/resource policies, so it’s not a fit for heavy file hosting or huge multisite networks.
Fewer data center choices than some global brands.
Not as many advanced developer features as higher‑end managed WordPress hosts.

Final verdict

So, is ServerByt good for WordPress after six months of real use? In my experience, yes — as long as you’re a blogger, freelancer, or small business looking for fast, affordable hosting and you’re not expecting premium enterprise features. For typical content‑driven WordPress sites, the performance‑to‑price ratio is excellent.

If you want to try it, you can check the latest ServerByt WordPress hosting plans and discounts on their official website here.

I’ve also published a much more detailed ServerByt review on my own blog, including extra screenshots, performance graphs, and a step‑by‑step migration guide. You can read that full review here.

CPM Calculator

Sadique Mannan — Thu, 12 Feb 2026 08:52:53 +0000

A simple calculator that helps determine CPM (Cost Per Mille) in advertising using total cost and total impressions.
This project is designed for learning, analysis, and planning — not campaign optimization or performance prediction.

What CPM Means

CPM (Cost Per Mille) represents the cost paid for 1,000 ad impressions.
An impression is counted when an ad is displayed, regardless of clicks or conversions.

Formula Used

The calculator applies the standard industry formula:

_CPM = (Total Cost ÷ Total Impressions) × 1000
_
This formula is consistent across most advertising platforms.

What This Tool Does

Accepts total advertising cost
Accepts total number of impressions
Calculates the CPM value
All calculations run locally in the browser.

What This Tool Does NOT Do

Does not connect to ad platforms
Does not use APIs
Does not access live campaign data
Does not predict performance
Does not measure clicks, conversions, or ROI
The calculator only converts provided inputs into a CPM value.

Accuracy and Limitations

Calculations are mathematically accurate
Output is informational only
CPM alone does not indicate campaign success
Results should not be treated as financial or marketing advice

Actual campaign outcomes depend on many additional factors.

Common Use Cases

This calculator may be useful for:

Understanding CPM pricing models
Comparing advertising costs across campaigns
Learning how impression-based pricing works
Educational and planning purposes

Context

CPM is commonly used in:

Display advertising
Video advertising
Brand awareness campaigns

Platforms such as Google Ads use CPM-based models for certain ad formats.

Use the Live Tool

👉 CPM Calculator

License and Usage

You are free to:

Use
Modify
Self-host
Learn from the code

Attribution is appreciated but not required.

Disclaimer

This project is not affiliated with or endorsed by any advertising platform.

All trademarks belong to their respective owners.

Why CPM Still Matters in Modern Advertising

Sadique Mannan — Wed, 21 Jan 2026 20:22:51 +0000

In a world obsessed with clicks, conversions, and ROI, CPM is often dismissed as a “basic” metric.

That’s a mistake.

CPM remains one of the most important indicators in digital advertising—especially for brand campaigns, publishers, and programmatic ads.

Understanding CPM properly can save money, set realistic expectations, and prevent poor decisions.

This article explains why CPM still matters and how I calculate it accurately.

What CPM Really Measures

CPM stands for cost per 1,000 impressions.

It answers one simple question:

“How much does it cost to show this ad 1,000 times?”
CPM is not about clicks.
It’s about visibility and reach.

Why CPM Is Still Relevant

CPM is widely used when:

Brand awareness matters
Advertisers want predictable spend
Publishers price inventory Even today, many display and programmatic campaigns are CPM-based. ## The CPM Formula Explained Simply

The CPM formula is straightforward:

CPM = (Cost ÷ Impressions) × 1,000

The challenge isn’t the formula—it’s applying it correctly and consistently.

That’s why I rely on a CPM Calculator instead of manual math.

How I Use CPM Calculations

I calculate CPM in three situations:

Evaluating ad inventory value 2.Planning campaign budgets 3.Comparing platforms fairly

A CPM calculator lets me calculate:

CPM from cost and impressions
Cost from CPM and impressions
Impressions from CPM and budget This flexibility is critical in real-world scenarios.

What CPM Doesn’t Tell You

CPM does not measure:

Clicks
Engagement
Conversions That’s why CPM should always be paired with CTR or conversion metrics.

Common Misunderstandings About CPM

High CPM doesn’t mean high profit
Low CPM doesn’t mean poor quality
CPM alone never tells the full story

Context matters more than the number itself.

Why Accurate CPM Calculation Matters

Small calculation errors scale quickly when impressions reach millions.
Using a CPM calculator:

Prevents manual mistakes
Saves time
Improves planning accuracy That’s why I never estimate CPM mentally.

Conclusion

CPM is not outdated—it’s misunderstood.
When used correctly, CPM helps:

Advertisers control budgets
Publishers understand inventory value
Marketers plan realistic campaigns Instead of guessing or miscalculating, using a CPM Calculator ensures accuracy and clarity. Advertising decisions should be based on math, not assumptions.

How I Check If a Website Is Safe Before Visiting It

Sadique Mannan — Tue, 20 Jan 2026 18:47:44 +0000

Over the years, I’ve realized that most online security problems don’t start with “advanced hacks.”
They start with one careless click.

A link shared in a message.
A search result that looks normal.
A website that feels trustworthy at first glance.

That’s why I never visit an unfamiliar website without checking a few basic safety signals first.
This isn’t about paranoia. It’s about making informed decisions.

Why I Don’t Rely on Appearances

Many people assume:

If a site looks professional, it must be safe
If it uses HTTPS, it can be trusted
If it appears in Google, it’s verified

None of these assumptions are reliable on their own.

I’ve seen phishing pages with HTTPS.
I’ve seen clean-looking sites flagged for malware.
I’ve seen compromised sites that were legitimate just days earlier.
So instead of trusting appearances, I trust signals.

The Question I Ask Before Clicking

Before visiting any unfamiliar site, I ask one simple question:

“Do trusted security sources raise any warnings about this site?”

If the answer is yes, I don’t visit it.
If the answer is unclear, I proceed cautiously.
This approach removes emotion and guesswork.

The Safety Signals I Personally Check

I focus on a few practical indicators:

Malware and Phishing Reports If a website is known for malware or deceptive behavior, I treat that as a clear stop sign.
HTTPS and Encryption HTTPS is not proof of safety, but lack of HTTPS is a strong warning signal.
Domain Reputation Some domains have a history of abuse or spam. Reputation matters more than design.
Consistency Across Checks I don’t trust a single tool. I look for patterns across multiple trusted sources.

How I Check These Signals Efficiently

Opening each security tool manually takes time. To simplify this, I use a BeingOptimist's website safety checker that helps me open trusted security reports in one place.
My process is straightforward:

Enter the website URL
Open the safety reports in new tabs
Review the results before proceeding This gives me context before I decide whether to visit, share, or ignore the site.

What I Don’t Expect From Safety Tools

I don’t expect any tool to tell me:

“This site is 100% safe”.
“This site is dangerous for everyone”.

That’s unrealistic.

What I do expect is clear, reliable safety information that helps me make a better decision.

A Common Mistake I See Often

People sometimes say:
“I visited the site before and nothing happened.”
That doesn’t mean the site is safe today.
Websites change. They get hacked. Scripts get injected. Ownership changes.
Safety is something you check when it matters, not once forever.

Why This Matters More Than Ever

With:

Increased phishing
Fake downloads
Impersonation sites
AI-generated scam pages

Basic safety checks are no longer optional. They’re a necessary habit.
Spending one minute to check safety is far easier than dealing with the consequences later.

Final Thought

Checking a website before visiting it isn’t about fear.
It’s about awareness and responsibility.
You don’t need advanced technical skills to protect yourself online.
You just need to pause, check trusted signals, and decide with clarity.
That small pause makes a big difference. For more information related to website security you can read our guide on How I Check If a Website Is Safe Before Clicking Any Link