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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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2k 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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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 ...
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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 ...
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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 ...
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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 ...
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58 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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166 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 ...
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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 ...
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159 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'...
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0answers
783 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 ...
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0answers
579 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.
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24 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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603 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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234 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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66 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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178 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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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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253 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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227 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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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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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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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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490 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
945 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
540 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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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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295 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 ...
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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
459 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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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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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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494 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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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 ...
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0answers
30 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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46 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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0answers
31 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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0answers
33 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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0answers
49 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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0answers
48 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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0answers
160 views

getting sim tool kit error in lenovo vibe k5 note

how do i stop the pop up which comes up every now and then saying sim tool kit error I have tried clearing cache and data of sim tool kit app but no change.
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0answers
91 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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0answers
785 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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930 views

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

Why does my SIM Toolkit icon is duplicated tripled? The second one appeared not so long ago, and it never happened before (I have the phone for more than a year and a half). There wasn't an OS ...
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228 views

Sony Xperia Z3 - Lollipop - Signal bar disappeared, no SIM would work

I'm experiencing problems with my 2 yo Sony Xperia Z3. Today i've changed the SIM card from polish T-Mobile to Orange (I've been using Orange for alot of time, even this particular SIM, and 1 month ...
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0answers
208 views

Problem “Not registered on network”

I have an old Samsung Galaxy Note II. Rooted. One day it went off. When I restarted it, it went to a somehow hybrid state between factory and the status it had before crashing, i.e. I had to ...
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0answers
46 views

Google tells me my smart phone was in Brazil two days ago, but I've been in California - what could it be?

I'm worried because Google tells me my smart phone was used to access my Google account from Brazil a couple of days ago. But I and my phone have been in the San Francisco Bay Area the whole time. (...