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.

117 questions with no upvoted or accepted answers
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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 ...
4
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0answers
220 views

Problems searching and joining network with Nexus One

I have a Nexus One, unlocked from Google. It is not rooted nor running custom firmware. I am trying to use it with 2 different international sim cards, which have worked in other peoples phones. I ...
4
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2answers
7k 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 ...
3
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1answer
17k views

Accessing SIM Toolkit in Android settings spawns duplicate SIM card entries?

I don't recall ever visiting this menu before. But I tried it today and this heppened: Settings -> Wireless Settings -> Sim & Network Settings -> Click on a sim (SIM 1 or SIM 2, this one is dual ...
3
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0answers
76k 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 ...
3
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0answers
2k 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 ...
3
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0answers
14k 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 ...
2
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0answers
62 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 ...
2
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167 views

bad calls on custom rom on I9500

For quite some time of trying out various roms on my I9500, I've found out that on all of them I had a call issue, where the other person kept hearing himself twice (echo). I've tried today to flash a ...
2
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0answers
490 views

Outgoing call is not working after lollipop 5.0.1 update in Samsung Galaxy A5

I have updated my mobile from kitkat to lollipop. After I updated Outgoing call is not working on 2nd Sim. On First Sim am using IDEA(sim card) and on Second Sim am using AIRCEL(sim card). So from ...
2
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1answer
1k views

SIM is unsupported on Galaxy Y running CM11

There's a problem with my Samsung Galaxy Y S5360 after upgrading from GingerBread to Android KitKat. I followed all the steps starting from downloading CWM, CyanogenMod 11, and the KitKat ROM. And ...
2
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1answer
1k views

Using a custom Lock Screen does not unlock the SIM (PIN)

When using Hi Locker as my lock screen, my Android Lollipop device does not prompt me for my SIM PIN upon boot -- and leaves the SIM card locked (therefore providing no service). Details: I'm ...
2
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0answers
162 views

A lack of sim card in my android device crashing my apps? Why?

A weird problem I observed with my Micromax A116, android version 4.2.1. From the day I bought it, 8 months back, I have used both the sim slots. But the internal earphones were damaged & I couldn'...
2
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0answers
803 views

Android detects SIM change – gmail synchronized messages deleted?

After gmail detects SIM change – it asks to renew login to gmail account. This is a very good security action. But does it maybe also clear synchronized messages (that have been downloaded before SIM ...
2
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0answers
580 views

How can I bulk import texts (SMS) from a SIM card?

How can I bulk import texts (SMS) from a SIM card ? I'm using a Nexus S with Gingerbread. The 1by1 import feature (copying the sms to the phone) removes the original sender.
2
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0answers
1k views

Reading all SIM setting

Just out of curiosity I'd like to see all the settings on my SIM-card. And I'm not talking about an SMS stored on the card, or my phonebook. I'd like to see for example the Preferred PLMN list and ...
2
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1answer
772 views

Sim contacts on call screen?

Is it possible to see contacts from SIM on the incoming call screen and in SMS messages? I did only find apps for managing them. I am using Cyanogen 7.2 (that’s Android 2.3.7) if that matters. NOTE: ...
1
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0answers
27 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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0answers
835 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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0answers
267 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 ...
1
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2answers
20k views

Saving contacts to SIM / view SIM contacts

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 ...
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67 views

how can lock or block some SIM carrier on android 4.1.2

have here in my country to types of SIM cards on the carriers, the first is open to the all networks... internet, sms, calls... and a second is all close data , only to call how can i do to close in ...
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1answer
562 views

Invalid sim card/no sim card inserted error

So I will do my best to explain what's been happening and what I have attempted to fix the issue. First off, I have a g3 us990 under US Cellular running octos marshmallow (custom ROM) along with TWRP ...
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0answers
180 views

What is Android trying to tell me with this pop up about selecting a SIM card?

I have been getting this message for a short time. Two changes are possibly the culprit: I switched to cricket from tmobile on a tmobile phone. Shortly afterwards I started getting these. I have a ...
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0answers
2k views

Phone is trying to store incoming SMS messages on SIM card

My Nexus 5X has stopped being able to receive SMS messages. Every time I'm supposed to get a text, I instead see a notification: "SIM card storage is full -- No more space for SMS messages on SIM card....
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0answers
81 views

SIM card no longer recognised

I own a Sony Xperia Z5 dual SIM phone. Phone is unlocked and running Android 5.1.1 I always used it with the same SIM card (3 Network) and it always worked well. Yesterday I tried to add a new SIM ...
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0answers
255 views

Nexus 4 drops connection to sim card when battery is low(ish)

For a few weeks now, my Nexus 4 (Android 5.1.1, stock rom) has occasionally lost the connection to the sim card. It won't have any connection to a network (indicator in the status bar is an empty ...
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0answers
230 views

How to move contacts from SIM to phone - need simple “private” local storage app

I've read like these posts: How to move contacts from SIM to phone? However, my Alcatel Android 4.4 phone does not have contacts app as purchased, only some People app that can display and group ...
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0answers
3k views

How to fix “My Phone Number - Unknown” on Nexus 5?

I had a standard SIM card, but I bought Nexus 5 and changed it for micro SIM card with saving my phone number. Now in Settings when I want find information about my phone number I only see "Unknown". ...
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0answers
85 views

Switch sim cards?

Up to about 3 weeks ago, I had a Motorola Moto X running Android 5.1 with Verizon/CDMA . Then I switched to a Nexus 5 running Android 6 with Ting/GSM. The Ting service is terrible it turns out, so I ...
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0answers
1k views

How does SIM lock work?

I'm considering buying a network-locked phone and unlocking it myself (cheaper than buying an unlocked phone). I'm wondering where Android phones store information about what networks to connect to. ...
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0answers
522 views

How to check if a model can make phone calls?

So I'm looking to buy a new android tablet, but I can not for the life of me find out for any given tablet whether or not it can make and receive phone calls like a regular android phone would. Am I ...
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0answers
70 views

Other SIM cards won't work in VZW S5. Should I root it?

I have a Verizon S5 which they claim to be unlocked. I travel internationally a lot and Verizon doesn't cover some of the places I go, so the Verizon rep I talked to said it's fine to just change out ...
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0answers
953 views

Android 5.0.2: Import contacts from sim card

Yeah, I know - it's not the first question. But others just don't answer my question! When I go to Contacts -> Menu, I got the next options: Call History New Contact Settings Why I don't see ...
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0answers
2k views

No SIM card detected — factory reseted and now it works. What now?

I have a Samsung Galaxy S 5 rooted and flashed CyanogenMod 12.1 on it (Android 5.1.1). Everything always have worked fine. Earlier this week, I have installed a new app in my phone. Although I cannot ...
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0answers
547 views

Unable to get network connectivity in Huawei Ascend G510

I have bought a Huawei Ascend G510 for developing purposes, and inserted a SIM card. Although it asks me to enter a PIN and accepts it I just cant get a network connectivity no matter where I am, but ...
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2answers
1k views

SIM card removed

My Samsung Galaxy S4 recently started displaying an error saying SIM card removed. Unable to detect your SIM card. Your device will restart to check for your SIM card. There is nothing to do at ...
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0answers
3k views

Checking for SIM card defects

Short question: How can I obtain detailed information about my SIM card, using Android apps and/or adb (possibly root)? I'd like to diagnose mobile data connection problems possibly caused by SIM ...
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0answers
301 views

Using the tablet for cell phone calls

My tablet is a SurfTab xiron 7.0 3G. It can take two sim-cards (dual sim-capable). I can receive voice calls over the bluetooth headphones. It does not seem to be able to alert by a ringer or flashing ...
1
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1answer
103 views

Ordered i9300 from eBay - need help to understand what's going on

I've ordered a new, unlocked i9300 from eBay, and I had some adventures with it: I've unpacked it, inserted my SIM, powered it on, and found out that the phone always thinks that I'm roaming. Instead ...
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0answers
5k views

Change MCC and MNC in the APN settings

I'm currently on a vacation with a new phone who worked perfectly on the country I bought it at (SMS, calls, data...) but now, when im abroad, the data wont work although I can make calls alright. But ...
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0answers
469 views

Gmail asking for authentication after changing SIMs

To recreate issue: Start 2-factor authentication Generate app-specific code Use that to sign into your device Change the SIM I have two SIMs, and I sometimes switch between them. The issue is that ...
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0answers
217 views

Samsung Galaxy Ace - Sim card detection

I have a Samsung Galaxy Ace android 2.3.7 with cyanogen mod-7-20130301-nightly-cooper version. It is not detecting the SIM card. Is it a problem due to Cyanogen mod or something else?
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0answers
152 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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1answer
168 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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1answer
2k 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
308 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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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
496 views

Can I install a custom rom with SIM Lock enabled?

I purchased a phone for development purposes knowing that it was being sold for parts/repair. The phone can't read SIM cards for some reason and the battery always says 999%. No idea why, but ...
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1answer
8k views

Asus Zenfone 6 doesn't see SIM cards, keeps booting itself. How to troubleshoot the issue?

I have a problem with Asus Zenfone 6 device, which worked well on stock firmware with minimal amount of additional installs for about a year. This is a dual SIM phone and it has both SIM card slots ...