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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How to Set default contacts to display from sim

I imported to save all my contacts saved in phone memory, sim card, google account . but after saving its showing each contact 3-4 times as its sync in WhatsApp also Then I changed default contacts ...
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SIM contacts reappear after deletion. All cache and data cleared, contact sync is off

I got a new phone and old contacts appeared on Google's stock Phone App. If I delete them, they reappear after I restart the phone. They do not appear on Google's stock Contacts app. Contact sync is ...
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How to add any eSIM to Samsung Watch using QR code?

My operator allows me to add an eSIM to any device using a QR code. This could for example be a phone. This eSIM isn't specific to Galaxy Watch. Can I add an (any) eSIM to my Galaxy Watch Active2 with ...
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“Device is reachable” SMS without SIM

I'm using a Huawei Honor P9 Lite with a German carrier and SIM card. My carrier offers the option to send SMS to me, whenever I miss a call. The other way round, whenever someone does not reach me (...
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Does Android store information about previous SIM cards?

Does Android store any info about previous SIM cards that have been inserted into the phone? Can the current mobile operator access this info? Can the current mobile operator get my GPS location ...
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3answers
91 views

How can I transfer all carrier settings from an existing phone to a new phone?

I have been provided a device for a telephone carrier that cannot be joined automatically. When the Sim is inserted into another phone, it cannot find/connect to the network. Due to the nature of the ...
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43 views

Why even new SIM card is corrupting in my both phones old and new?

My old phone which is running on Android 4.0.4 Sony Xperia ST21i (3G) and new one is Android 9.0 ASUS Zenfone Max Pro M2(4G) but this is not a case. I've same problem in my new phone that I was ...
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59 views

Google services don't work on apps but work on browser after changing SIM card

I changed the SIM card in my cell phone and Google apps such as Google Maps, YouTube, etc. no longer works, saying I was offline. Yet they still work if accessed from a web browser. How to get the ...
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42 views

How to disable Enter SIM card PIN window under Android 9?

hello see the picture. I took my smartphone with me and the battery was empty. When I recharged the device I got this typical SIM card message. Enter the PIN. but unfortunately I didn't know the PIN ...
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1answer
402 views

How to check IMSI/ICCID on MIUI10?

Is there any way to view IMSI and ICCID numbers of my SIM-cards? I didn't find such menu neither in About-Status nor anywhere else.
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23 views

How to remove a large sim card from a Samsung Galaxy S8

Someone put a large size SIM card into the card slot of my Samsung Galaxy S8 without using the tray. How do I get it out?
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84 views

New smartphone + old simcard after 3 months (messages)

The police have lost my smartphone that i pay a monthly contract for. It has been lost for 3 months but i am holding out hope that it will be found as i am currently in communication with them hoping ...
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59 views

Network Mode disappeared

I have an Verizon note 3 from the USA that was unlocked and network mode was set to global, I live in another country with another sim card that only works on global. I accidentally pressed Automatic ...
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1answer
30 views

Pixel 3, can't find eSIM option

According to specs pixel 3 supports eSIM, but under settings > mobile networks there are no relevant options. Is this depending on whether I'm currently in the service area of a mobile network ...
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38 views

SAT / STK: which pard of the standard implements SIM Toolkit app?

I'm wondering which part of the standard for the SIM Application toolkit (is it GSM 11.14?) implements the app "SIM Toolkit" which is com.android.stk in my device. Does it only provide the user ...
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202 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 ...
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39 views

Sim Card Virtualization in JIOFI

I have a 3G android without any sim. For UPI verification in Gpay, a SIM is required. Is it possible to virtualize the sim in JIOFI device?
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1answer
652 views

How to check if device support eSIM?

How to check if device support eSIM? I'm using Asus Zenfone Max Pro M2. I found there's Mobile Plan in Network & Internet settings. But I'm not sure it is for eSIM. When I tap on it, says :...
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51 views

Enable data and sms on CDMA network programmed number Galaxy S7 Edge

My Galaxy S7 edge (G935P) sim card slot is broken. It doesn't recognize any sim card I put. I managed to program my phone number into the phone using CDMA Network. I can make calls, but I can't send ...
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50 views

How to stop my 2nd SIM number from being added to my contact on my friends devices?

I've an S10+ and I use two SIM cards on it. A personal number and a work number. But recently I noticed some of my personal contacts calling me on my work number. But I never told them this number. ...
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1answer
33 views

What are potential causes of internet malfunction?

I'm using Asus Zenfone Max Pro M2. Running on android pie. Phone is updated to latest firmware. Few days ago I've changed sim card but problem still persist. I can use internet with another sim ...
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69 views

Factory resetting htc onem9 has caused straight talk sim card to not work

I’m kinda lost with this right now,I originally did this due to my phone not recognizing music downloads on the music app.do not possess original sim card if that matters.Any help is greatly ...
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554 views

Why does sim tool kit is not appearing?

I'm using Asus Zenfone Max Pro M2. Running on stable pie. But sim tool kit is not appearing in my phone. Does that mean my sim card is corrupted? I face slower download speed using it. So when I've ...
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1answer
44 views

Stolen Android Tablet [duplicate]

If a tablet has been stolen, the sim card removed and been factory reset, is it possible, at all, to have it tracked?
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263 views

How to disable SIM notification telling you your number?

When I reboot my phone, I always get this message from Android: Your number: +XX XXX XXXX XXXX I'm on Android 9. How can I disable it? (I'm not changing SIMs or something, just plain reboot.) To ...
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74 views

Unable to disable mobile data on both SIMs with Nokia 5

A couple of days ago, I bought a Nokia 5, and for the most part, I have finished setting it up. However, one issue I've come across is that while I'm able to disable mobile data for my first SIM, I am ...
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38 views

Huge battery power consumption with one particular SIM card

I have a Vodafone SIM card in an Android phone. In that phone, there is a 2000 mAh battery. I had noticed that the battery was discharging very fast, about 2%/hour when idle! At that time, no battery ...
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1answer
4k views

XIAOMI Redmi 6: how to change or remove the pin of the sim?

I have XIAOMI Redmi 6 phone, model M1804C3DG. Android version: 8.1.0, kernel version: 4.9.77+ . There is no options in the menu to remove or change the pin of the sim. I have enabled developers ...
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1answer
244 views

How does AOSP on a dual sim smartphone handle data?

How does AOSP on a dual sim smartphone handle data? Does it provide the option to choose the SIM when I do tethering or use the native hotspot?
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77 views

Xperia XZ Premium Dual recognizes Micro SIM cut to fit Nano tray, but not regular Nano SIM cards

Ok, so I've got one headache inducing mind-boggler for y'all today. My phone (Xperia XZ Premium Dual, model number G8142, codename Maple, architecture Yoshino), has a rather odd issue when it comes to ...
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31 views

Which component of the Android protocol stack performs cellular encryption?

I understand that the SIM Card plays a significant role in generating keys for the encryption and decryption of cellular traffic, but are these keys passed to the Android architecture so that it can ...
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1answer
46 views

What happens if a change the SIM card to my phone?

Will Android add the contacts of the new SIM card to my Google Account? What else could happen?
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264 views

USB tethering without a SIM card

Why isn't this allowed? I'd like to use my brother's old phone to get on the Internet. It's the same model as mine (ZTE ZMAX PRO). He just recently passed away, and his last phone is being returned to ...
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2answers
2k views

International roaming, forbidden networks, hidden sim toolkit on one plus 5T

I have used international roaming many times before with my one plus 5T and my native Vodafone India providers roaming plan. But this time I landed in Germany and it did not work. I've been trying ...
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1answer
3k 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 ...
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201 views

Is it possible to make Android remember the SIM PIN and automatically unlock the SIM upon reboot?

This way the phone could be unlocked and used with the visual pattern. (Or some other mechanism, e.g. fingerprint, face scan, etc.) The SIM card PIN wouldn't have to be repeatedly input after every ...
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1answer
2k 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 ...
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1answer
102 views

MMS messages go into a group conversation with sender and my own number instead of the regular SMS conversation

Let's say I have a conversation with Alice. If Alice sends me an MMS, it appears outside of that conversation, as a group conversation with Alice and my own phone number as participants. Could this be ...
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2answers
66 views

Can an Indian GSM phone be used in the USA?

I'm considering buying the Oppo F9 Pro, which has a dual sim GSM slot. I currently have consumer cellular service with a nano GSM sim card. would I be able to import the Indian phone and use it here ...
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1answer
142 views

Problems with two-step verification on a new SIM

I recently purchased a new SIM. When I try to install WhatsApp, it asks for a PIN that was apparently created by the previous owner for two-step verification. What should I do?
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1answer
42 views

Infinity loading of centrain Google Apps on Italian SIM

I have OnePlus 5 (Android 8) phone and I have 1 SIM slot with my home SIM and 2 SIM slot with Italian Prepaid card with internet data. I am getting infinity loops when I am using centrain Google apps....
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318 views

SIM IccId - logged anywhere?

Is there anywhere I can find historical traces of the IccId? By that I mean, something to indicate the identity of the sim card at some point back in time. Ideally, this would be as far back as ...
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1k views

Automatically disable SIM 2 while SIM 1 has signal?

Is it possible (via Tasker or otherwise) to automatically disable a SIM when the other one has a signal, and to similarly re-enable it once the other loses signal?
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1answer
1k views

“SIM Tool Kit: Error in application” pop-up always shows on Lenovo Vibe K5

I have a Lenovo Vibe K5. The phone screen always shows a pop-up message saying: SIM Tool Kit Error in application How to fix this issue?
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2k views

Why SIM Toolkit icon is duplicated (now tripled) in launcher?

UPDATE: It stopped happening after the latest OS (and launcher) update - to Android 8 Why does my SIM Toolkit icon is duplicated tripled? The second one appeared not so long ago, and it never ...
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1answer
445 views

Can the Verizon Samsung Galaxy S9+ also run T-Mobile?

(This question does not apply to the unlocked version - it applies to the Verizon version specifically) Is the Verizon Galaxy S9 Plus able to also run T-Mobile using its dual sim feature, or is that ...
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1answer
6k views

What happens to my WhatsApp account if my carrier sells my number to someone else?

I'm aware that I don't need a SIM card to continue using my WhatsApp account after the initial activation. But say, hypothetically, I went into a pool with my phone inside my pocket and my SIM ...
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72 views

Moto G4(XT1625)Funny behavior with sim card inserted

I have a Motorola Moto G4(XT1625, Amazon Prime Edition) on US Cellular. Data doesn't work(sim status screen shows connecting or disconnected but never connects), the signal fluctuates somewhat, and ...
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1answer
2k views

What is the No Sim card icon for?

On Android 7, when you pull down the top bar drop-down window (Quick Settings) a grid of 3x3 icons appears with tiles like Wifi, screen rotation on/off, Aeroplane mode etc. On my new phone with a new ...
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1answer
31 views

A few questions about android 7 on a new phone

Why does my mobile provider only show in the topbar on the lock screen? How can I get it to show on the topbar when unlocked? Also in the drop down menu with the icons for some often used settings I ...

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