For Czech travelers visiting Bali, the easiest way to stay connected is by using an eSIM. It works instantly when you arrive, so you don’t need to queue at the airport or change a physical SIM card.
The best option is a local Indonesian eSIM, as it gives you faster speeds, more stable coverage, and better value compared to international roaming eSIMs.
In Bali, Telkomsel is the most reliable provider, with the strongest network across tourist areas and beyond.
Telkomsel eSIM by BaliEasy
BaliEasy uses the local Telkomsel network, so you get the same experience as a local SIM, not a roaming connection.
This means your connection is stronger and more stable across Bali, even in popular areas like Canggu, Uluwatu, and Ubud.
You can also enjoy faster speeds, especially in busy places, with better performance for everyday use such as maps, online payments, ride-hailing apps, and browsing.
Beecause BaliEasy uses a fixed data pricing model, there are no hidden Fair Usage limits like many “unlimited” plans.
You simply use the data you purchase at full speed from start to finish, without unexpected slowdowns.
This means you get more usable data for your money, with no speed throttling surprises. It is also more cost-efficient for trips lasting 10 to 30 days.
If you run out of data, you can easily top up online without reinstalling the eSIM or changing your number, so your connection continues without interruption.
Hotspot and tethering are also fully supported with no daily limits.
More importantly, the connection stays stable even when you use more data, which makes it a good choice for remote work, video calls, uploading files, or using multiple devices at the same time.
Saily
Saily is a roaming-based eSIM that is suitable for casual travelers. For everyday use such as browsing, using maps, and messaging, it generally performs well and covers basic connectivity needs.
However, because it relies on roaming, the speed and stability depend on how the network is routed.
This can lead to slower performance during busy periods, and the connection may not be as consistent as a local network.
In addition, a Fair Usage Policy usually applies, which means speeds can be reduced after a certain amount of data is used, especially for heavier activities.
In terms of pricing, Saily can be competitive for smaller data packages or short trips.
But for longer stays, it often requires multiple top-ups, which can make it less cost-effective compared to local eSIM options.
Yesim
Yesim offers both fixed data and “unlimited” plans, and it works across many devices. For general use such as browsing, messaging, and basic apps, it performs reasonably well, and the setup process is simple and user-friendly.
However, since it is a roaming-based eSIM, speeds can vary depending on the network conditions.
The “unlimited” plans also come with a Fair Usage Policy, which means your speed may be reduced after reaching a certain usage limit. This can affect performance, especially if you use a lot of data for activities like streaming, video calls, or uploads.
In terms of pricing, Yesim is generally more expensive compared to Bali-based providers. You often pay more while getting less usable high-speed data, which makes it less suitable for longer stays or for users who need stable, high-volume connectivity.
Holafly
Holafly focuses on simplicity with its “unlimited data” plans, which can look very attractive at first.
For basic usage like Google Maps, messaging, and light browsing, it works well and is easy to use without needing to think about data limits.
However, in real usage, speeds may be reduced after moderate consumption due to Fair Usage Policy limits. The connection can also feel inconsistent during busy times, especially in crowded areas.
Another limitation is hotspot usage, which is usually restricted to around 500 MB per day, making it less practical if you want to connect a laptop or share data across devices.
In terms of pricing, Holafly uses a daily rate of around USD 5 to 6 per day. While this offers convenience, it becomes quite expensive for longer stays and provides less value per GB. Overall, it is best suited for short trips with light usage rather than extended stays or heavier data needs.
Jetpac
Jetpac is a roaming-based eSIM designed for travelers visiting multiple countries. It works well for short stays or multi-destination trips because it offers flexible data plans and an easy activation process that can be done before arrival.
In Indonesia, Jetpac connects to available local networks depending on coverage, often including providers like Telkomsel. This helps maintain connectivity when moving between regions or islands.
However, since it relies on roaming, speed and stability can vary based on network routing and location.
For everyday use like browsing, maps, and messaging, Jetpac performs adequately. But for heavier usage such as video calls, streaming, or uploads, performance may be less consistent compared to a local eSIM.
Hotspot and tethering support depends on the specific plan, and some plans may have limitations. It is recommended to check this in advance if you plan to use multiple devices.
Overall, Jetpac is a good option for flexible, multi-country travel, but it is less suitable for longer stays in Bali or for users who need stable, high-speed data.
Local eSIM vs Roaming eSIM
What is a roaming eSIM?
A roaming eSIM is usually offered by international providers like Airalo or Holafly.
Instead of connecting directly to an Indonesian network, your data is first routed through servers outside Indonesia before reaching the local network in Bali.
In simple terms, your connection takes a longer path before reaching the internet.
Because of this, you may experience slower response times, less stable speeds during busy hours, and automatic switching between different local networks.
This can make the connection feel inconsistent depending on where you are.
What is a local eSIM?
A local eSIM works the same way as a SIM card bought in Indonesia. It connects directly to a local operator such as Telkomsel, without passing through any international routing.
In simple terms, your phone connects straight to the Indonesian network with no extra steps.
This gives you faster and more stable internet, lower latency for things like video calls and maps, and more consistent coverage across Bali and other parts of Indonesia.
You also get a local +62 number, which is useful for apps like Gojek, Grab, and other local services.
BaliEasy eSIM is a local Indonesian eSIM, so you connect directly to the Telkomsel network without any roaming layer in between.
Why Tourists Should Choose Local eSIMs
Since there is no international routing involved, local eSIMs usually deliver a more reliable experience for daily use.
The connection goes directly through Indonesia’s network infrastructure, which helps maintain stable speeds and better performance.
Compared to roaming eSIMs, you get a stronger and more consistent signal in popular areas like Canggu, Ubud, and Uluwatu, along with smoother performance for navigation, online payments, and streaming.
BaliEasy eSIM uses the Telkomsel network, allowing you to enjoy fast and stable internet throughout your stay in Bali.
Unlimited Data vs Fixed Data
Many travel eSIM providers advertise “unlimited data,” but in most cases, these plans are controlled by a Fair Usage Policy (FUP).
This means the data is not truly unlimited at full speed.
So what does FUP actually mean? After you reach a certain usage limit, your internet speed is reduced significantly.
You can still use basic functions like messaging, but activities that need more data, such as navigation, video calls, or streaming, may become slow and less reliable.
This is why FUP can be limiting. Speeds often drop after hitting a daily or total usage threshold, making performance inconsistent for important tasks like maps, remote work, or media consumption.
In many cases, the exact amount of high-speed data is not clearly explained, which can lead to unexpected slowdowns.
Fixed data plans are often a better option. You get full 4G or 5G speed for the entire data amount you purchase, with no hidden restrictions.
Your usage is clear and predictable, and the performance stays stable for navigation, hotspot use, and work-related tasks.
BaliEasy eSIM uses a fixed data model with no FUP, so you always enjoy full speed until your data is fully used.
Large data packages are available, including options up to 83GB, and you can easily top up anytime without changing your eSIM.
In real use, this usually provides better value and a more consistent experience compared to “unlimited” plans that reduce speed after a relatively small amount of high-speed usage.
Key Tips for Czech Travelers Using eSIM in Bali
- Choosing the Right Type of eSIM
It is important to choose an eSIM that includes a local Indonesian number (+62). This allows you to use local services more easily, such as ride-hailing apps, food delivery, and bookings. It also helps with receiving OTP codes or calls from local businesses during your stay. - Before You Travel
Install and set up your eSIM before leaving Czechia. This ensures your connection is ready as soon as you arrive in Bali, so you don’t need to depend on airport WiFi or spend time looking for a SIM card after landing. - Activation Checklist
Before using your eSIM, make sure everything is properly set. Turn on data roaming for the eSIM line, set it as your primary mobile data line, and confirm that your phone supports eSIM and is unlocked. Also check that the eSIM line is active in your settings. - Save Time and Money
Avoid buying SIM cards at the airport, as they are usually more expensive and require waiting in line. With an eSIM, you can activate your connection instantly, avoid paperwork, and often get better value, especially for larger data packages. - Network & Performance
Coverage in Bali is generally strong, with reliable 4G/LTE and growing 5G availability in many areas. You can expect stable performance in popular locations, although signal may be weaker in remote areas or smaller islands. - For Longer Stays
If you plan to stay in Indonesia for more than 30 days, you need to register your phone’s IMEI with Indonesian Customs. Without this, your device may lose access to local networks, and your eSIM may stop working after the initial period.

