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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Network SIM unlock code not working

I paid to get an unlock code for my Samsung Galaxy S4 Active SGH-I537 locked to AT&T. I have tried to enter the unlock code given when the phone boots with my other carrier SIM card inserted, but ...
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0answers
1k views

Unknown phone number issue

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?
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0answers
409 views

Replacing the flash chip on a Galaxy Nexus

A little background I have two Galaxy Nexus phones: one reported lost(was lost) 32GB and a current 16GB version. Current Issue I'm trying to put the 32GB flash chip into the current phone. ...
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1answer
170 views

Restricted Access for SIM when use internet (3G, 2G and wi-fi)

I am using THL W3+ and i have some problems when I switch on the internet (3G,2G, wi-fi) - it is working in normal mode for not more than 5 minutes and then the SIM and voice calls are in restricted ...
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1answer
109 views

Changing carriers and sims - how do I know if the new network will work?

My family is considering switching to T-Mobile, and I would like to bring my current Droid 4 with me. I have already stopped by a local T-Mobile store to see if their sim would work. The phone ...
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4answers
15k views

Remove “No SIM Card in Phone” message

I recently changed to a newer phone and currently using my old android phone as a sort of "ipod". However, it always shows the message that there is no sim card. I know this is just an annoyance but ...
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1answer
281 views

Multiple phone numbers per SIM contact

Some time ago I owned an Sony Ericson mobile phone. It was able to store a contact on the SIM card and add information like adress or multible phone numbers. Why isn´t it possible to do the same ...
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1answer
4k views

Mobile network not available on unlocked Active

I purchased a "new" unlocked Samsung Galaxy S4 Active SGH-I537 phone on E-Bay. Everything works fine except when I use the phone with my local carrier SIM card. When I insert the SIM card and turn on ...
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0answers
805 views

Can't save contacts in Sony Xperia

I have a Sony Xperia with Android OS 4.0.4. Until recently it worked fine but now my SIM contacts are all gone. I can't save in sim either. While saving in contacts I used to get option whether to ...
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1answer
480 views

SIM Card not detected after encrypting device

I have a Samsung Galaxy Pocket Neo (Model GT-S5310B) running Android 4.1.2 The device is not rooted and the update notifier tells me I have the latest available version installed. Today I tried ...
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1answer
192 views

Any way to change my caller id?

Is there any way to change my own caller ID so the person I'm calling sees my Google Voice number instead of the number associated with my SIM card? My Google Voice number is my primary number and I ...
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2answers
706 views

Backup SIM message and contact without transfer to phone

Is it possible to backup the message (e.g. SMS) and contacts inside my SIM card to my external SD Card without transferring them into my Android phone?
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0answers
2k views

Why isn't my SIM card working after factory reset?

After doing a factory reset on my Micromax Ninja A89(dual sim), I am unable to register on my service provider. Though my sim was working fine on the same device before the reset, but it is not ...
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1answer
63 views

SIM card removed?

Apparently I'm getting this message after using the phone camera. But not all the time. Then it restarts. What could be the problem? Nexus 4, Android 4.4
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1answer
82 views

Can 2 SIM cards be activated on one phone? [closed]

If I get a new T-Moble SIM and activate it on my Google Nexus 4, then put the old one back in, will the old one still work?
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0answers
9k views

SIM card not detected

I own a GIONEE P2 mobile phone with MTK6572 processor and android 4.2.2. I successfully rooted the phone and it was working fine until my internet stopped one morning and upon restarting the phone, it ...
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1answer
3k views

Samsung Galaxy S2 'Not Registered on Network'

I wonder if anyone can help me please. 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 ...
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4answers
26k views

THL W3 with v4.0.4 - periodically getting “Restricted Access Changed” and losing all SIM services

What happens exactly: when I use my SIM's data connection, after 1-5 minutes of operation (be it while the phone is active or locked), I get a notification "Restricted Access Changed", losing all SIM ...
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4answers
2k views

Are there any problems caused by setting up my phone before the SIM card arrives?

Bought a brand-new Samsung S4 mini and ordered a new SIM card which is due to arrive in a week. So far I've inserted the battery and charged it. Should I turn it on, even without a SIM-card in it, or ...
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1answer
1k views

SIM contacts are shown in Messaging application, but not displayed in Contacts list

I changed the option to only see my Google contacts (GMail) (and hide my SIM contacts). This is working perfectly in the "Contacts" app, but when I try to send a text message, and I provide a keyword ...
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1answer
703 views

How can applications be installed on SIM and how do I view and disable them?

I've got a new sim card. After it found the network, soon I've got an sms (supposedly from my operator) saying: Dear client! We are installing applications on your sim card for free. Please enable ...
2
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1answer
837 views

Are settings and accounts (like email) removed when changing the SIM card?

My android phone was stolen. The SIM-cards PIN must be entered on start and I also had a PIN set for unlocking it. My question now is if the SIM card is changed, will all the settings be reset or ...
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0answers
285 views

Verizon GSM SIM card for unlocked Samsung Galaxy S2 [duplicate]

I have an unlocked Samsung Galaxy S2. I bought it from Bangladesh. It has been working well with any Bangladeshi GSM SIM card. I just arrived in USA. Is it possible to get a Verizon GSM SIM card for ...
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1answer
94 views

If I insert a Japanese SIM into my Nexus 4, can I have unlimited access to the Japanese Google Play Store?

I read this thread (How does Google Play determine the region on a tablet without SIM card) and it seems like the region is determined by IP, but if I insert a SIM purchased in Japan into my Nexus 4, ...
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3answers
12k views

SIM card is not working on Sony Xperia Z (Android 4.1.2)

My friend has a problem using his micro-SIM card on his new Sony Xperia Z (Android 4.1.2) The problem is: when he inserts the SIM card, the phone display a message that the SIM card has been ...
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2answers
2k views

SIM 1 Card Full notification on HTC Desire SV

On my HTC Desire SV, a notification says SIM card is full Delete some messages to make more space. I've deleted all my messages and it still won't go away. I've clicked on it and it leads me to ...
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0answers
185 views

Making Android phone locked using the SIM card password

When I press the power button. the Android phone will go into sleep mode. When I press the power button again, the Android phone will wake up and ask me a password. So, how do I make the Android ...
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1answer
551 views

How to find my stolen galaxy ace duos [duplicate]

I lost my galaxy ace duos. The sim card has been changed. How can i trace phone or find the number of the new sim being used? I have several apps installed. can that help in anyway? Thanks for the ...
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0answers
1k views

How to auto unlock SIM/UICC on trusted devices?

I don't like manually entering PIN1 of SIM/UICC everytime I reboot my Android smartphone or switch SIM/UICC between multiple trusted devices. How to auto unlock SIM/UICC on my trusted devices? The ...
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3answers
564 views

Prevent entering PIN code before lockscreen

I have a Samsung Galaxy Mini. I'd like to know if it is possible to prevent the user from entering the PIN code before unlocking the normal pattern, since it recently happened to me that someone got ...
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2answers
19k views

Whatsapp, Keeping the number on the new phone but without the old sim card

Whatsapp, Keeping the number on the new phone but without the old sim card. Ok the situation is I love my old number and to be honest don't want to ask everybody to change my number again and again. ...
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2answers
574 views

Why is there no network in my new Samsung Galaxy S2 when I insert my Prepaid Sim Card?

I bought a new Samsung Galaxy S2 and insert my Prepaid Singtel Sim card. When i turn it on, it doesn't have any network and states 'no service'
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2answers
22k views

SIM vs. USIM inside Android smartphones

I've browsing through some jargon and cannot figure out what exactly the difference is between USIM and SIM. While not strictly an android question I figure all android phones are bound to have either ...
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1answer
5k views

Galaxy S3 Mini - my provider only offers micro and nano SIM cards

I've ordered a [Samsung Galaxy S3 Mini] (hasn't arrived yet) : http://www.gsmarena.com/samsung_i8190_galaxy_s_iii_mini-5033.php On the above link, it says that it uses "Mini-SIM". I've tried ...
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0answers
389 views

Does the Nexus 4 battery drain faster if it has no SIM card inserted?

Does the Nexus 4 battery drain faster if it has no SIM card inserted?
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7answers
71k views

How do I find out my SIM number?

I have a Samsung Galaxy GT-I9000 and need to find out my 20 digit SIM number somehow. I have been told that I should go to Settings > General > About to find it. However, it isn't! Does ...
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3answers
13k views

How can I stop my phone sending an SMS every time I insert a SIM card?

I have one Samsung tablet and one Samsung mobile phone. When I insert my Airtel SIM in tablet then it automatically sends one SMS to an unknown number, and when I insert the same SIM card into my ...
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1answer
2k views

Does nexus 4 work with indian network [duplicate]

I had bought a nexus 4 from US & right now.. i am trying to use it in india, with Vodafone SIM. I am facing problem, as the phone doesnt detect any SIM. Please guide whether Nexus 4 can be used ...
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1answer
946 views

Sim card failed

Ever since that I got the cyanogen 7 it says that no SIM -- but it is in there. I was wondering how to solve the problem It has been ... quite and adventure. What I've tried: First I tried Heimdall ...
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0answers
1k views

Save SMS to phone directly

Some of my text messages get saved in my SIM card automatically and this does not show up in notifications and I miss out on reading them. I only realize the messages have arrived when I get a ...
2
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1answer
327 views

Clearing a SIM Card

After doing a factory reset on my phone, I reinserted the SIM card into the phone and I got a message suggesting that I import settings, messages, and contacts from my SIM card to my phone. I know ...
5
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1answer
2k views

How secure is a sim lock?

I have sim lock enabled on my sim, so basically, if I put my sim in another phone or if I restart my phone, I need to enter the sim lock pin. How easy is it to crack the sim lock if a theif got hold ...
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2answers
3k views

How to disable USSD notifications?

On Android 4.2.1, some new stuff has appeared in the notification area. It shows my current balance and has an icon of the "SIM-card menu" app. Also, sometimes, some spammy messages appears (from my ...
2
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0answers
8k views

How do I connect to a EAP-SIM authenticated network (namely FreeWifi_secure from Free Mobile)?

I am running CyanogenMod 10 (based on Android 4.1.2) on my Motorola Milestone 2. I just switched to the French mobile carrier Free Mobile. They offer access to their "FreeWifi_secure" wifi network in ...
0
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1answer
352 views

Empty SIM contacts list, but they still show up in contact details

I use solely Google contacts as my contacts repository and display only the Google "My Contacts" group in my contacts list. When looking at contacts details, most of them have in the "connection" ...
3
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3answers
12k views

Galaxy Note 2 shows no sim card after radio flash

I have the SGH-T889 (T-Mobile USA version of the Note 2). When I got my Galaxy Note 2, I loved the device, but disliked the software. So, I decided to flash CyanogenMod 10 build from the N7100 forums. ...
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1answer
7k views

What SIM card size does the Nexus 7 use?

The iPad uses silly little SIM cards that pretty much need to be purchased ad-hoc. This means that in a pinch situation you can't e.g. swap SIM cards between your tablet and your phone (e.g., if ...
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0answers
2k views

Samsung Galaxy S3 “Not registered on network”

It had stock 4.0.4 -> could call. I've flashed FoxHound ROM -> after a while, when I try calling, it says "Not registered on network" . Tried GalaxSim, but everything looks ok. Restored back to ...
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0answers
2k views

Import SIM card contacts not working? (HTC One X)

I have a new HTC One X. After storing all my contacts from my previous dumb-phone onto the SIM card, I tried to import them on the new smart-phone. (People->Menu->Import/eexport->Import from SIM) It ...
8
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1answer
6k views

I changed my sim card - how do I find which app is sending sms messages to my old number?

I recently traveled to another country and I'm using a local prepaid sim card on my Galaxy S2. My prepaid credit was depleted rather quickly, and when I checked the phone record I found out my phone ...