1 / 79esim B1 eSIM Adapter, 1.1 MB, 30 Profiles
The 9esim B1 is a rewritable SIM-to-eSIM adapter that stores compatible eSIM profiles on a physical SIM card. It is designed for wireless profile management through the 9eSIM app on compatible unlocked Android phones, without an external card reader.
At a glance
- Stores up to 30 compatible profiles in 1.1 MB of memory, according to the listing.
- The listing describes wireless profile writing through the 9eSIM app, without an external reader or PC.
- An offline SIM Toolkit menu is specified for switching profiles.
- The card can be rewritten and reused, but deleting a profile does not guarantee it can be downloaded again.
Reference price: $57.99
Price checked: 14 Nov 2026
View offerAhead of Black FridayExplore the selectionPros and cons
Pros
- Wireless profile management can avoid carrying a separate card reader, cable and PC.
- An offline switching menu can be useful when changing between stored profiles without internet access.
- The stated rewrite capability supports reuse of the card across compatible profiles.
Cons
- Requires an unlocked Android phone running Android 9.0 or later and a physical SIM slot, which rules out unsupported devices.
- Only one stored profile is active at a time, so this does not provide simultaneous use of multiple profiles.
Technical specifications
16 specifications| Brand | 9esim |
|---|---|
| Model | 9eSIM USB-C Kartenleser |
| Storage | 1.1MB |
|---|---|
| Profile capacity | Up to 30 compatible eSIM profiles |
| Rewrites | Unlimited — rewrite and reuse as many times as you want |
| Profile switching | Offline STK menu |
| Cellular technology | eSIM |
|---|---|
| Supported phones | unlocked smartphones running Android 9.0 or later |
| SIM requirement | physical SIM card slot |
| Service provider | Global |
| Includes prepaid data | Yes |
| Includes prepaid minutes | No |
| Number of items | 1 |
| Default password | 778899 |
|---|---|
| Country of origin | China |
| Warranty description | 1 Year Manufacturer |
What to know before buying
- The listing says prepaid data is included, but also says to check the selected listing for any bundled plan and that the hardware and mobile service are separate. Confirm whether this purchase includes an active data plan. Check phone, SIM-slot and carrier compatibility before buying. Profile re-download after deletion depends on the provider's rules.
Who is it for?
A good fit for
- Travellers with a compatible unlocked Android phone who want to store and switch among eSIM profiles using a physical SIM adapter.
- Users who want wireless profile writing without carrying a separate reader.
Less suited to
- iPhone users or owners of locked phones, phones without a physical SIM slot, or devices running Android earlier than 9.0.
- Anyone expecting several stored profiles to be active simultaneously or assuming a provider will allow deleted profiles to be reinstalled.
Customer reviews on Amazon
- 5 stars
54% 54% - 4 stars
23% 23% - 3 stars
0% 0% - 2 stars
0% 0% - 1 star
23% 23%
There is only a small aggregate rating sample, with both five-star and one-star ratings represented. That spread suggests experiences may vary, but it does not identify specific strengths or problems. It is not enough to establish how reliably the wireless setup or profile switching works, so buyers should treat those as listing claims and confirm device and provider compatibility.
Frequently asked questions
Which phones does the B1 support?
The listing specifies unlocked smartphones running Android 9.0 or later and requires a physical SIM card slot. Check the phone and carrier compatibility before ordering.
Can all 30 stored profiles be active at once?
No. The listing says only one profile is active at a time, with switching through the offline SIM Toolkit menu.
Does it include mobile data?
The details say prepaid data is included, but the product description says to check the selected listing for a bundled plan and separates the hardware from mobile service. Confirm the plan included with the chosen listing.
Can a deleted profile be installed again?
Not necessarily. Reinstallation depends on the provider's download and activation rules, even though the card itself is described as rewritable and reusable.
