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Questions tagged [sim-card]

A SIM card is an integrated circuit that securely stores the data used to identify a subscriber within a mobile network.

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0 answers
22 views

Android: Can't rename SIM card - SIM name already in use

I'm trying to rename a eSim card on my Samsung phone (Android 14) But I get the following error ("SIM name already in use"): It's because previously I had use this name for my physical SIM ...
-1 votes
0 answers
29 views

Unable to connect. Please try again later | During WhatsApp Initializing Phase

I installed WhatsApp on an old phone in order to retrieve chat history from it, however, when the app is trying to register (Initializing) it shows error like in my title. One point to note is that ...
0 votes
1 answer
137 views

SIM card not detected after 6 hours on Samsung Galaxy A15 4G

I’m currently experiencing an issue with my Samsung Galaxy A15 4G. After approximately 6 hours of usage, the phone suddenly behaves as if there’s no SIM card inserted. I’ve conducted some tests and ...
1 vote
0 answers
162 views

How to start Android and bypass the SIM PIN?

How to start Android and bypass the SIM PIN? I'm asking myself why it is not possible to start/boot Android without entering the PIN for the SIM card. The smartphone is a computer, with it's own ...
0 votes
0 answers
21 views

Smartphone with SIM card slot and data network transmitter/receiver

I was wondering whether it would be possible to have a smartwatch that had a SIM card slot and a data network transmitter/receiver. This is because, some smartphone apps, on some smart watches, may ...
-1 votes
1 answer
39 views

Deleted contacts from removed dual-SIM still visible in WhatsApp

Earlier I had 2 SIM cards and contacts from both contacts were visible in my WhatsApp. But after removing one of my SIM cards, the contacts from both 2 SIM contacts are still visible in WhatsApp (...
5 votes
3 answers
10k views

SIM card not detected on Lineage OS

I installed LineageOS on my OnePlus One (bacon) a few months ago. With Covid-19 lockdown it was weeks before I noticed that the SIM card isn't being detected. I thought it might be damaged, but EE ...
0 votes
0 answers
33 views

Putting a SIM to another phone and placing it back again. Any side-effects?

If I have a phone A that I use and I get a new phone B and I take out the SIM card from A and insert it in B and try it out. When I put back the SIM to A will it be exactly as was before, or could ...
23 votes
5 answers
242k views

How can I manage contacts on my SIM card with an Android phone?

How can I add and manage contacts on a SIM card with an Android phone (HTC Magic)? I'm aware of 1 application which is capable of doing this but it cost 4€ for SIMPLY managing SIM contacts o_O
0 votes
0 answers
171 views

How do I diagnose and fix "No Service" on Samsung A52S A528B

I woke up one morning to find my mobile (it's pretty beat-up and recently had a professional screen replacement) displaying "No Service". I'm now unable to use mobile internet, make calls or ...
0 votes
1 answer
333 views

"This account is not allowed to use WhatsApp due to spam" after registering with a new SIM card

I have recently upgraded my mobile to Samsung Galaxy S24 Ultra. I kept my old S21 Ultra, with the idea to use that for personal things and my new S24 Ultra for business. I had WhatsApp Business, ...
0 votes
2 answers
46 views

Moved the SIM card from an iPhone 6 to a Samsung Galaxy S20, cannot receive texts from iPhone users

A friend had an iPhone 6 and received a newer Samsung Galaxy S20 phone. He moved the SIM card from the iPhone to the Samsung phone. He had trouble receiving text messages. He removed the SIM card and ...
0 votes
1 answer
3k views

Samsung Galaxy S2 'Not Registered on Network'

I have a Samsung Galaxy S2 that I want to sell. I have reset it to factory settings. However, I have a problem. When I bought the phone new, it was on O2. I changed fairly recently to Virgin ...
1 vote
0 answers
109 views

An app requires mobile data from a certain SIM. How to bypass this?

I have a foreign SIM card and app which needs to be activated. An app, to be activated, requires mobile data, and of the SIM card An issue is that I'm far away from a country and can't use the SIM ...
0 votes
0 answers
2k views

How can I use my BLU M10L Plus tablet 4G LTE as a phone using the SIM phone number?

How can I use my BLU M10L Plus tablet 4G LTE as a phone using the SIM phone number? I am unable to find the phone and messaging system on my tablet.
3 votes
1 answer
210 views

Can Android device send emergency message to 911 without SIM card?

I already know that Android devices can call 911 without a SIM card (ref: Can an Android phone with no SIM card make an emergency call?), but can they can send a message to 911 without a SIM card?
0 votes
0 answers
562 views

Put SIM card w/service and number that didn't come with Blu M22 tablet

Is there any to make Blu M22 a phone? I put a different SIM card on my tablet with service and a number. I have TextNow on the phone and can make calls and send/receive texts from that number. I just ...
8 votes
3 answers
21k views

Access phone without SIM PIN

Sometimes I want to access my phone without unlocking the SIM cards (yes, two of them, so two PINs). It may be that I just want to play some games, and I know that there is no coverage so I do not ...
2 votes
1 answer
154 views

A universal way of changing the PIN code on a mobile SIM card

Is there a universal way to change the PIN code on a SIM card for a mobile/cell phone? Will it work on both my phone's two SIM cards, SIM1 and SIM2?
0 votes
2 answers
9k views

Unknown phone number issue [duplicate]

My Moto X with Android kit Kat does not recognize my own number from the Sim card. Is there a way to edit it manually? Any app that does that?
0 votes
0 answers
32 views

Valid sim card occasionally not being detected

My android (TLC 767w) Will occasionally lose all network access, reporting an error that sim card could not be detected and giving an annoying ping every minute or so at me. I've always been able to ...
0 votes
1 answer
13k views

Is it safe to remove SD and sim card while phone is powering on and off?

i noticed someone was removing and putting in the SD and sim card while my phone was powering on and off, and i wanted to know if this is safe or if it can cause issues with the phone? Also they were ...
0 votes
0 answers
95 views

My voicemail is gone

My carrier is consumer Cellular they sent me a new SIM card because they said mine needed to be updated. After inserting the new one my voicemail is gone. I tried to set it up again but it says my ...
0 votes
1 answer
658 views

Using WhatsApp without current SIM

Next week I will go on holiday to a foreign country and for this, I bought a prepaid SIM card because with my phone's current plan, I have little to no data in Roaming. My problem is that I will be ...
1 vote
0 answers
97 views

My location get recognized by my SIM card [duplicate]

I noticed that the TikTok app locates me by my SIM card, how is this possible? I didn't give it any Location/Call/Messages permission. Also, I used VPN but it still recognizes my location. How can I ...
3 votes
3 answers
12k views

Importing the Telegram contacts into the phone book - Android

I have a fairly serious problem. I lost all the numbers in the phone book, breaking the SIM card, but luckily I saw that most of them are stored on telegram. I tried with telegram desktop to export ...
0 votes
1 answer
5k views

Viber already active on PC; want to activate the same Viber account on Android without SIM card

I already have Viber installed on my PC and want to install it on my Android now. Want to use the same old mobile number with Viber but I cannot receive SMS on that old number. I don't know how to ...
3 votes
2 answers
29k views

Saving contacts to SIM / view SIM contacts [duplicate]

I've just bought a new Android phone (Wileyfox Swift 2X) and updated to Android 7.1.2. Up until now I have always saved my contacts to my SIM card, which saved me a great deal of trouble with past ...
1 vote
0 answers
278 views

SIM not detected anymore disabling a SIM

I have Oneplus 8T with Android 13. My SIM was on Slot 2 yesterday. Then I accidentally clicked on "Disable SIM". Now it says "No eSIM" "Disable eSIM to u.." (it only ...
3 votes
1 answer
2k views

How to disconnect SIM from network on schedule

I have a 2-SIM phone and need to be able to unregister one of the SIMs from the network each Friday from 16:30 to 20:00. The reason is that this SIM is a duplicate of another SIM which my friends use ...
0 votes
1 answer
4k views

Unable to add contact to SIM

I want to add new contact and save it in SIM Card. I use OnePlus One with CyanogenMod 11S, which is on top of Android 4.4.4 and inside I have O2 pay-as-you-go card from UK. When I used Gingerbread ...
3 votes
0 answers
910 views

Is there any way to hide mobile carrier from applications?

I have 2 applications that refuse to work (fully or at all) if I insert a SIM card in a smartphone. Disabling mobile data and geolocation (which is not allowed by default anyway) doesn't change ...
3 votes
0 answers
40 views

Pixel 3a XL Requires SIM Card Removed/Reinserted to Power On

My wife has a Pixel 3a XL, and in the last 2 weeks it has shut down unexpectedly 3 times, refusing to power back on. The battery is charged, and connecting it to any charger makes no difference. ...
0 votes
0 answers
56 views

Japanese SIM not registering on Oppo f19 pro

My sister lives in Japan and has recently started using OPPO f19 pro. However, her sim is not registering on the device. She inserted her old Pakistani sim and it works but she obviously can't use the ...
1 vote
0 answers
140 views

Why do dual-SIM smart phones always have to have 1 SIM card turned on?

I read that smart phones can operate for Wifi messaging apps, for example, without needing a SIM card, except during installation But when I go to Settings /Connections /Sim Card Manager on my dual ...
1 vote
0 answers
3k views

Unknown phone number

An app that I need is not recognizing a SIM/Phone number. ...But the problem is not the app: Before we go: I've visited other forums, but the answers are uneffective, completely unfit, or oriented to ...
0 votes
0 answers
141 views

Apps are crashing after changing SIM

I changed my service provider a day ago and after that almost all the apps are crashing. I deleted the cache factory stop etc. Nothing has worked. When I restart my phone I am able to use apps ...
1 vote
1 answer
148 views

Can I install an uncertified eSIM profile provisioned by myself on Android?

I would like to set up an SM-DP+ server to provision my own eSIM profiles. These usually get certified by GSMA and are used for large-scale Remote SIM Provisioning, but I would want to use this for ...
1 vote
0 answers
1k views

Find phone number attached to data-only sim card

I have 2 data-only sim cards that I use with 4G routers (Huawei E5576-320), and I need to be able to differentiate them. The "phone numbers" attached to the cards should allow me to ...
3 votes
1 answer
1k views

How do I change phone number in Viber from SIM1 to SIM2, when I only have data on SIM2?

How do I change Viber phone number in a dual-SIM phone from SIM1 to SIM2, when my current Viber account's phone number corresponds to SIM1, but I only have data on SIM2? (e.g. when I have moved to a ...
2 votes
1 answer
1k views

Samsung Galaxy loosing mobile network connection randomly until restart

I'm using a Samsung Galaxy S20 FE 4G and every time I enter a building's basement, even for just a short time period, the connection is cut and my phone looses it's connection to the mobile network. (...
1 vote
2 answers
6k views

WhatsApp data transfer from expired SIM card to new SIM card

My old SIM card number has expired and is no longer active on my mobile network. How do I recover my WhatsApp account chat history from this inactive SIM card number since it can no longer receive the ...
-1 votes
1 answer
290 views

Sign in to WhatsApp account on old number without old SIM card [duplicate]

I want to restore my phone to factory settings, which means WhatsApp will be deleted. I use my old number on WhatsApp, and I don't have the SIM card. If I downloaded WhatsApp again and tried to sign ...
5 votes
3 answers
70k views

Migrate WhatsApp from phone (old expired number) to another one?

I have a phone that has had WhatsApp installed on for over 2 years now, and the phone number registered for the account is now history (it's been long gone and there is no chance I will get that SIM ...
2 votes
0 answers
565 views

Access Samsung S9 without providing Sim card pin code, no code otherwise to unlock it

My girlfriends mother recently passed away. She wants to gain access to her mother's phone but unluckily it was out of power when she got it. The phone does not normally need any kind of code to ...
0 votes
1 answer
834 views

Gabb Plus sim card locked [closed]

My Gabb phone's sim card got locked. It's my only phone, so I can't call or text any number. I don't know my PUK code, which it requires to unlock. How would I unlock it? Thanks in advance.
0 votes
2 answers
1k views

SIM card cannot be detected, cannot open "SIM Card Manager"

The SIM Card Manager on the Settings cannot be opened. The SIM, contacts, and messages also cannot be detected on my cp. Even the mobile data can't connect. It says "Insert SIM card", but the SIM card ...
1 vote
1 answer
67 views

Why was my launcher setup reset after inserting a SIM card?

I have a new phone, and I started to "customize" it while still using my old one. When I felt the phone is ready for switch-over, I inserted the SIM card from the old phone. That worked, but ...
1 vote
1 answer
148 views

Huawei 5C - locked out wanting PIN1

I have a rooted Huawei 5c that I'm locked out of. It requires 'SIM1 - PIN1' which AFSAK I never created. Normally one gets three attempts and then you have to input PUK (which I have); that I'm aware ...
3 votes
1 answer
2k views

How do Android apps access phone's simcard and determine the location/country without permission?

I noticed there are apps like Shazam or Tiktok that can find my location/country and offer local content even when I use VPN. my VPN doesn't have any IP/DNS leak. When I remove the simcard or make it ...

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