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6 votes
Accepted

How do Android apps access phone's simcard and determine the location/country without permission?

Apps cannot access SIM card directly, neither they can get your exact location without getting permission. But they can get your country code if the device is connected to a cellular network. No ...
Irfan Latif's user avatar
  • 20.6k
4 votes

WhatsApp: old SIM card but new phone

Key Point is Whatsapp doesn't delete an inactive account. Also see: • What happens if my WhatsApp has been inactive for months? • Does WhatsApp delete inactive accounts? You can get your contacts ...
Ajit's user avatar
  • 360
4 votes

Importing the Telegram contacts into the phone book - Android

After exporting all the contacts with Export Telegram data, I created a Python script that extracted all the contacts from the generated website. The script, positioned directly inside the Telegram ...
Memmo's user avatar
  • 173
4 votes
Accepted

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

Go to Settings -> Additional Settings -> Privacy. Find SIM Lock section, select the SIM you want to change the pin, then click on "Change SIM PIN".
Reddy Lutonadio's user avatar
4 votes
Accepted

A universal way of changing the PIN code on a mobile SIM card

Is there a universal way to change the pin code on a SIM-card for a mobile/cell phone? Enter * * 04 * oldPIN * newPIN * newPIN # in the usual way that you dial a phone number (i.e. through the "...
user1686's user avatar
  • 261
4 votes

Can Android device send emergency message to 911 without SIM card?

You can call 911 on any cellphone with or without a SIM card. You may not be able to send 911 a text, a feature my county has available. To be honest, whenever I have texted 911 they text back with &...
B. Kordash's user avatar
3 votes
Accepted

Does the Google Play Store app requires a SIM card?

No, a SIM is not required to access to Google Play on any device.
acejavelin's user avatar
  • 6,197
3 votes
Accepted

New Note 7 Rebooted and Erased All Data on First Time Insert of SIM card. Why?

This appears to be an undocumented feature of Note 7 as per this XDA thread Samsung factory restore after inserting SIM for the first time on GN7 by ninja0n3 OP here faced the same problem and ...
beeshyams's user avatar
  • 41k
3 votes
Accepted

Is it safe to remove SD and sim card while phone is powering on and off?

The concerned term is hot swapping External storage (including SD card) should only be removed after it has been unmounted from the system, which ensures that no data gets to be read from or written ...
Firelord's user avatar
  • 25.1k
3 votes
Accepted

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

I also faced the same problem with OnePlus5 mobile and with Vodafone IN. The local networks in Germany were showing as forbidden. The debug is to go to Sim Tool Kit -> International Roaming -> Select ...
user304427's user avatar
3 votes

How to disconnect SIM from network on schedule

Here's a community favorite: Tasker! It is very straightforward to set up a profile to exist that is triggered based on a day of the week and time, as you specified. Disabling the SIM appears to be ...
jlehenbauer's user avatar
2 votes

Suddenly my phone does not detect my SIM while it detects service providers' names

The SIM card isn't actually what allows your phone to connect to a network, but it has your subscriber details (i.e. the information that links the phone with your account with the phone company). If ...
Dan Hulme's user avatar
  • 35k
2 votes

New Note 7 Rebooted and Erased All Data on First Time Insert of SIM card. Why?

I had this same experience just yesterday with my wife's Note 7, but without anything to do with Exchange or ActiveSync. It's some security policy on the Note 7 itself, I think. I am online to ...
Don Cuthbert's user avatar
2 votes

When changing SIM card what needs to be copied or transferred from the old SIM card?

A SIM card typically has 8k to 256k of memory which stores MNC, ICCID, IMSI, Authentication Key (Ki), Local Area Identity (LAI), and Operator-Specific Emergency Number. The SIM also stores other ...
acejavelin's user avatar
  • 6,197
2 votes

How to bypass "enter SIM PIN" screen on Android Marshmallow?

Why not enter the PIN to access the phone. Well, I don't think you can bypass that. If its your SIM, I would advise you contact your service provider and they would help.
Kriztekblog's user avatar
2 votes
Accepted

Turn off aeroplane mode to make a call on Moto g2

It appears you are using the incorrect firmware for your device... Your device is Retail India (RETIN), but the firmware image you are using is Retail Latin America (RETLA). The correct firmware for ...
acejavelin's user avatar
  • 6,197
2 votes

How to find out the maximum number of contacts that the SIM card phonebook can hold?

European Telecommunications Standards Institute (ETSI) lays down standards for SIM From 3GPP TS 21.111 version 8.0.1 Release 8 pertaining to 3G 10.2.6 Number of entries : The specification shall ...
beeshyams's user avatar
  • 41k
2 votes

Sim change alert on galaxy s8?

I had Same concern, got response fro Samsung itself, it seems they have discontinued "SIM Change Alert" after Nougat update. They have suggested to use third party app as an option, Find below ...
That's Shekhar's user avatar
2 votes
Accepted

What is the No Sim card icon for?

Since you have pointed out that you have dual SIM phone with only one SIM card inserted, so it is obvious that given icon is a Quick Setting tile for another SIM slot, which is empty in your case, ...
global_warming's user avatar
2 votes

Problems with two-step verification on a new SIM

I just experienced the same problem and according to WhatsApp support there is no real solution for it. I also got a new SIM with a phone number that was used by someone else before. This previous ...
Johann Kraft's user avatar
2 votes

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

I had same problem with Airtel but in another country. But same SIM worked in same phone in some other countries. When I used to land in one particular country it won't latch to any network. I was ...
Anil's user avatar
  • 21
2 votes
Accepted

How do I change phone number in Viber from SIM1 to SIM2, when I only have data on SIM2?

In Android > Wifi & Internet > SIM & network, Enable both SIM1 and SIM2. Set 'default SIM for mobile data' to SIM2. Apparently Viber needs to see old SIM1 as well, to verify it ...
smci's user avatar
  • 155
2 votes

my contacts lost

Usually an address book entry on a SIM card consists of only two fields: Telephone number Name All other fields you had used before moving the contacts to the SIM card are unsupported and therefore ...
Robert's user avatar
  • 20.4k
2 votes
Accepted

SIM card not detected on Lineage OS

I think I found a solution to this. In my case, the SIM stops working every time I place the SIM into another device and back into my Oneplus One (Lineage OS). It works perfectly until I remove the ...
Bandi's user avatar
  • 36
2 votes
Accepted

Japanese SIM card not connecting to network in US

I had to go into Settings > Connections > Mobile networks > Network operators and manually select a network.
PleaseAndThanks's user avatar
2 votes

Can I install an uncertified eSIM profile provisioned by myself on Android?

In order for your handset to establish secure communications with the SM-DP+ and then download and install a eSIM profile, the SM-DP+ will require 3 certificates signed by the GSMA's certificate ...
Ron McLeod's user avatar
2 votes

"This account is not allowed to use WhatsApp due to spam" after registering with a new SIM card

It sounds to me that new mobile number you have been assigned was previously assigned to someone whose account was blocked by Whatsapp. And Whatsapp is linked to your mobile number. It is quite ...
Rohit Gupta's user avatar
  • 1,881
1 vote
Accepted

Read sim data in airplane mode

Yes. Aeroplane mode is to only deny access to network. System apps can access SIM information when in aeroplane mode. So can installed apps, if they are granted permissions to access SIM. For ...
beeshyams's user avatar
  • 41k
1 vote

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

I haven't figured out exactly what was misbehaving and why, but I accidentally now (years later) found out how to force a refresh: I put the phone in flight mode, opened the sim tray, swapped the sims,...
Spectraljump's user avatar

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