The transition from physical SIM cards to eSIM technology marks a significant shift in how mobile connectivity is managed globally. In Indonesia, by.U stands at the forefront of this digital transformation as the country’s first fully digital cellular service provider. Powered by the extensive network infrastructure of Telkomsel, by.U offers an eSIM solution that eliminates the need for plastic cards, shipping times, and physical store visits. This digital-first approach allows users to purchase, register, and activate their mobile plans within a single mobile application.

Understanding the by.U eSIM Ecosystem

An eSIM, or embedded SIM, is a small chip built into a smartphone's motherboard. Unlike traditional SIM cards that must be inserted and removed, an eSIM allows you to download a carrier profile digitally. by.U utilizes this technology to provide the same high-speed 4G and 5G connectivity that Telkomsel is known for, but with the added flexibility of digital management.

For users, the by.U eSIM represents more than just a lack of physical hardware. it provides an integrated experience where the user has total control over data quotas, topping up credits, and selecting personalized phone numbers. Since by.U operates on the Telkomsel network, it offers the widest coverage across the Indonesian archipelago, from the bustling streets of Jakarta to the remote regions of Papua.

Identifying eSIM Compatible Devices

Before initiating the purchase of a by.U eSIM, it is critical to verify that your hardware supports the technology. While most flagship smartphones produced after 2018 include eSIM capabilities, mid-range and budget models vary significantly by region.

How to Check Compatibility on iOS

For iPhone users, the process is straightforward. Navigate to Settings, then select Cellular (or Mobile Service). If you see an option labeled "Add eSIM" or "Add Cellular Plan," your device is hardware-ready. Specifically, the iPhone XS, XS Max, and XR were the first to support this, and all subsequent models, including the latest iPhone 15 and 16 series, are compatible. It is important to note that iPhones purchased in mainland China, Hong Kong, and Macau often feature dual physical SIM slots and may not support eSIM.

How to Check Compatibility on Android

Android compatibility is more fragmented. On a Samsung Galaxy device, go to Settings, then Connections, and look for SIM Manager. If "Add eSIM" is present, the device is compatible. For Google Pixel users, the option is found under Settings > Network & Internet > SIMs. Generally, flagship series like the Samsung S-series (from S20 onwards), Note 20, and the Z Fold/Flip series support eSIM. Most Google Pixel phones from the Pixel 3 onwards also include this feature.

The Role of EID

Every eSIM-compatible device has a unique 32-digit identification number known as the EID (Embedded Identity Document). You can find this in your device's "About Phone" settings or by dialing *#06# on your keypad. The by.U application will often ask for this EID or perform an automatic check to ensure that the profile can be successfully provisioned to your hardware.

Step by Step Guide to Ordering a by.U eSIM

The ordering process for a by.U eSIM is handled exclusively through the by.U mobile application. This ensures that the user identity is verified and the digital profile is securely linked to the correct account.

1. Application Installation and Account Setup

Download the by.U app from the Google Play Store or Apple App Store. Upon opening the app, you will be prompted to create an account. You can sign in using a Google account, Facebook, or an Apple ID. This account will be the central hub for managing your eSIM profile, so ensure you use a primary email address that you can access easily.

2. Selecting the eSIM Option

On the main landing page of the app, there is a clear distinction between ordering a physical SIM and an eSIM. Select the eSIM option. At this stage, the app may perform a diagnostic check on your device's internal components to confirm that it can accept a digital SIM profile.

3. Choosing a Data Package

One of the most attractive features of by.U is its "build-your-own" plan philosophy. Users can choose from various "Yang Bikin Nagih" (The Ones That Make You Crave More) packages. These range from small 1GB daily plans to massive 100GB+ monthly plans. Unlike traditional providers, by.U does not have hidden rules about "local quotas" that only work in specific cities; the data you buy is valid nationwide across Indonesia.

4. Phone Number Selection

After picking a data plan, you will be presented with a list of available phone numbers. by.U allows a high degree of customization here. You can pick from a list of generated numbers or search for specific digit combinations that are easy to remember. Some premium numbers may require an additional fee, but standard options are included with the plan.

5. Identity Verification (E-KYC)

In accordance with Indonesian government regulations (Kominfo), every SIM card must be registered with a valid ID. For Indonesian citizens, this requires the NIK (National Identity Number) and KK (Family Card) number.

For international tourists, the process involves scanning a passport. Based on our practical experience with the by.U app, the E-KYC (Electronic Know Your Customer) process is the most sensitive part of the journey. Ensure that you are in a well-lit room when photographing your ID. The app uses AI to match your face with the photo on your ID card. Avoid wearing glasses or hats during the selfie verification stage to prevent registration errors.

6. Payment Methods

Once verification is complete, you proceed to payment. by.U supports a wide array of digital payment gateways, including GoPay, OVO, DANA, LinkAja, and ShopeePay. You can also use credit cards (Visa/Mastercard) or virtual accounts from major Indonesian banks like BCA, Mandiri, and BNI. Since the process is digital, the payment is confirmed instantly.

The Activation and Installation Process

After the payment is successfully processed, by.U will generate your unique eSIM QR code. This code contains the necessary credentials to download the carrier profile from Telkomsel’s servers to your device’s eUICC chip.

Accessing the QR Code

The QR code is typically displayed within the by.U app under the "Order Detail" or "Activation" section. Additionally, a copy of the QR code and the manual activation details (SM-DP+ Address and Activation Code) is sent to your registered email address. This is a crucial backup in case you accidentally close the app.

Scanning the Profile

To install the eSIM, follow these steps:

  1. Stable Internet Connection: Ensure your device is connected to a reliable Wi-Fi network. You cannot download an eSIM profile using cellular data from the SIM you are currently trying to install.
  2. Access Settings: On iOS, go to Settings > Cellular > Add eSIM > Use QR Code. On Android, go to Settings > Connections > SIM Manager > Add eSIM > Scan QR Code.
  3. Scan the Image: Use your camera to scan the QR code provided by by.U.
  4. Confirm Activation: The device will contact the Telkomsel server. This may take 30 to 60 seconds. Once completed, you will see "by.U" or "Telkomsel" appearing in your signal bar.

Manual Entry

If your camera is unable to scan the code, you can choose "Enter Details Manually." You will need to copy the SM-DP+ Address (usually starting with rsp.telecom...) and the specific Activation Code string from your email into the corresponding fields in your phone's settings.

Navigating the IMEI Registration for International Users

A unique challenge for travelers using a by.U eSIM in Indonesia is the country’s strict IMEI (International Mobile Equipment Identity) regulation. Since late 2020, any mobile device brought into Indonesia from abroad must have its IMEI registered with the Indonesian Customs (Beacukai) if it is to be used with a local SIM card for more than 90 days.

The 90-Day Tourist Exception

If you are a tourist visiting Indonesia for less than 90 days, you can usually use a "Tourist SIM" profile without a permanent IMEI registration. However, by.U is a standard local provider. This means that if your phone’s IMEI is not registered in the Ministry of Industry (Kemenperin) database, the by.U eSIM might show "No Service" even after a successful installation.

In our testing, we have found that some travelers successfully bypass this by visiting a Telkomsel GraPARI (service center) to have their IMEI white-listed for temporary tourist use. If you plan to stay in Indonesia for an extended period, it is highly recommended to register your device at the airport customs office upon arrival.

Managing Multiple eSIMs and Device Transfers

One of the primary advantages of eSIM technology is the ability to store multiple profiles on a single device. While an iPhone can store eight or more eSIMs, only two can be active simultaneously (Dual SIM standby).

Switching Profiles

You can easily toggle between your home country's eSIM and your by.U eSIM through the settings menu. This is particularly useful for receiving 2FA (Two-Factor Authentication) SMS messages from your home bank while using by.U for local data.

The Transfer Limitation

A common misconception is that an eSIM can be easily moved from one phone to another like a physical SIM card. This is not the case with by.U. Once an eSIM profile is downloaded to a specific device, it is "bound" to that device’s EID. If you buy a new phone, you cannot simply scan the old QR code. You will need to contact by.U customer support through the app’s help center to request an eSIM reset or a new profile, which may involve a small administrative fee or a re-verification of your identity.

Troubleshooting Common by.U eSIM Issues

Despite the convenience, users may occasionally encounter technical hurdles during the setup or usage of their by.U eSIM.

"No Service" or Signal Drops

If your eSIM is activated but shows no signal:

  • Check APN Settings: Ensure the APN (Access Point Name) is set to internet. This is usually automatic, but manual overrides can sometimes be necessary on older Android versions.
  • Network Selection: Go to Network Settings and ensure "Automatic Selection" is turned on. If it fails, manually select "Telkomsel" or "by.U" from the list of available providers.
  • Airplane Mode Toggle: A quick way to force the device to reconnect to the nearest cell tower is to toggle Airplane Mode on and off.

QR Code Scanning Errors

If the device displays an "Unable to Complete Cellular Plan Change" error:

  • Single Use Policy: Ensure the QR code has not been scanned previously on another device.
  • Connection Quality: A weak Wi-Fi connection is the most common cause of timeout errors during profile downloads.
  • iOS Version: Ensure your iPhone is running at least iOS 12.1, though iOS 15 or later is recommended for the best eSIM management features.

Accidental Deletion

If you accidentally tap "Delete eSIM" or "Remove Cellular Plan" in your phone settings, the digital profile is erased from the chip. This is the equivalent of throwing a physical SIM card in the trash. You will not be able to restore it yourself. You must reach out to by.U via the "Nanya Booth" (Chat Support) in the app to issue a replacement.

Comparing by.U eSIM to Physical SIM Benefits

Why choose the eSIM over the traditional physical card?

  1. Environmental Impact: by.U’s digital approach significantly reduces plastic waste and the carbon footprint associated with shipping physical cards across the Indonesian archipelago.
  2. Immediate Gratification: There is no waiting for a courier. From the moment you decide to get a number to the moment you are browsing the web, the process can take as little as 15 minutes.
  3. Security: If your phone is stolen, a thief can easily remove a physical SIM to prevent tracking. An eSIM cannot be removed, making it easier for "Find My iPhone" or "Find My Device" services to stay active as long as the phone is powered on.
  4. Space Saving: For users of phones like the iPhone 14 or 15 (US models), there is no physical SIM tray at all, making eSIM the only option.

Frequently Asked Questions about by.U eSIM

Can I use by.U eSIM for Roaming?

Yes, by.U offers roaming packages for various countries including Singapore, Malaysia, Thailand, and several others. You can purchase these "Roam'n" packages directly within the app using your existing eSIM profile. It is a cost-effective way to stay connected when traveling outside Indonesia without changing your SIM again.

What happens if I reset my phone to factory settings?

When you perform a factory reset, most devices will ask if you want to "Keep" or "Remove" your downloaded eSIM profiles. Always select "Keep" unless you intend to sell the phone. If you remove it, you will have to go through the recovery process with by.U support.

Is the 5G network available for by.U eSIM?

Yes, as long as you have a 5G-compatible device and are in a Telkomsel 5G coverage area (such as parts of Jakarta, Bandung, or Bali), your by.U eSIM will automatically connect to the 5G network. There is no extra charge for 5G access; it uses your existing data quota.

Can I change my by.U physical SIM to an eSIM?

Yes, existing by.U users can migrate from a physical SIM to an eSIM. This is done through the "Manage SIM" section in the by.U app. The process usually involves a small fee for the digital profile issuance and follows the same activation steps as a new order.

Summary of the by.U eSIM Experience

Adopting a by.U eSIM is an efficient way to tap into Indonesia's most robust telecommunications network. By removing the physical barriers of traditional SIM cards, by.U provides a streamlined, transparent, and highly customizable mobile experience. Whether you are a local looking for the best data deals or a traveler needing immediate connectivity upon landing in Denpasar, the by.U eSIM offers a reliable solution.

The key to a successful experience lies in verifying device compatibility, ensuring a stable Wi-Fi connection during the download, and completing the E-KYC process with care. As eSIM technology continues to mature, by.U’s digital-first infrastructure ensures that its users are always at the cutting edge of mobile connectivity in Southeast Asia.

By following the detailed steps outlined above, you can navigate the registration and activation process with confidence, ensuring that your digital life remains uninterrupted while exploring or working in Indonesia. The integration with Telkomsel’s network guarantees that despite the virtual nature of the SIM, the physical reality of your connection remains strong and consistent.

Conclusion

The by.U eSIM is a transformative tool for modern mobile users in Indonesia. By leveraging the power of Telkomsel and the convenience of the by.U app, users gain access to a world-class network without the antiquated hurdles of physical retail. While the technology requires a bit of technical readiness—specifically regarding device compatibility and E-KYC—the benefits of security, flexibility, and speed far outweigh the initial learning curve. As the mobile industry moves toward a cardless future, by.U provides a reliable and high-performance gateway for anyone needing a digital footprint in Indonesia.