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 do I clone a SIM card?

When I search the web, all I get is hits on how to transfer your "contacts". "SIM" is an acronym for "Subscriber Identity Module". So, as I understand it, there is more information on that little ...
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30 views

Droid Mini in France with local SIM card?

I have a Droid Mini bought in America with Verizon that I'd like to be able to use in France. It's supposedly one of their "Global Ready" phones, so using it here should be as simple as getting a new ...
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17 views

OS lost communication to SIM card (no SIM card) [duplicate]

I lost communication with SIM card after flashing ROM and I try to figure out what went wrong. In „Factory mode“ when I go to test SIM card slot it results in „Test failed“. Both SIM slots (dualsim). ...
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350 views

No SIM card detected after installing new ROM

I probably did some mistake which I don't know how to solve. After I installed a new ROM I get message: Slot 1: No SIM card detected Slot 2: No SIM card detected „SIM management“ is ...
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0answers
242 views

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
80 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
62 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
55 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
48 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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2answers
472 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
53 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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0answers
483 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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83 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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0answers
99 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 ...
2
votes
1answer
92 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
109 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
226 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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0answers
15 views

Can swapping a SIM while phone is on, damage the phone? [duplicate]

I accidentally put in the SIM to my phone when the phone was still powered on. I did not get any signal until I rebooted. THe manual says to power off the phone before swapping sims. Could I have ...
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0answers
9 views

My phone number changed into “Unknown” when i put my new sim card in to my phone samsung galaxy grand [duplicate]

what causes my phone samsung galaxy grand duos phone number display unknown in setting >>>>about device>>>>>>status>>>>>>my phone number>>>>"Unknown"!!Can i create my phone number in somewhere else ?
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1answer
38 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
52 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
50 views

Android hot SIM swap

Devices like Samsung Galaxy Note III Android 4-3 Sony Xperia Z Android 4.1.2 Samsung Galaxy S4 Android 4.2.2 Supports hot SIM swap( allows sim change without removing battery from phone). I ...
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43 views

HTC Droid Incredible Sim Card

I have seen postings showing that the HTC Droid Incredible does and does not use a SIM card. Can anyone shed some light on this? I bought a used HTC Droid Incredible on EBAY, and the seller said it ...
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3k 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
2k 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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3answers
6k 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
1k 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
736 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
142 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 ...
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1answer
296 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
232 views

Verizon GSM SIM card for unlocked Samsung Galaxy S2

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
88 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
4k 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
859 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 a ...
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0answers
126 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
363 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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684 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
457 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
9k 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
443 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
10k 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 ...
2
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1answer
4k 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
886 views

Galaxy S GT I9003 stuck in flight mode and no sim card detection

My phone galaxy GT-I9003 is stuck in flight mode and not able to detect Sim card. I tried factory reset and went to service center. Service center guys upgraded software but still stuck in flight ...
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0answers
252 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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6answers
24k 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
6k 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
638 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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968 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 ...
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1answer
249 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 ...