My phone in S4 mini duos GT-19192 when I tried to call it says, not registered in network and I also can't receive messages but when I tried to put my sim in other phone it works.. What should

Samsung Galaxy S4: WiFi not scanning for networks:

Hello:

Try these troubleshooting tips:

1. If this is happening at home, it could be your network setup is having issues, turn off your router/modem, wait 2 minutes, and then turn the router back on.. wait for the router to connect and then try again..

OR

2. Go to:
Settings > WiFi > (remove your network & then re-add it, don't forget you need your WiFi password in order to log back in)

OR

3. Go to:
Settings > Connections (Network Connections) > More Networks > turn on Airplane Mode > wait a few seconds and then turn off Airplane Mode

OR

4. Go to:
Settings > My Device > Turn Power Saving Mode Off

.

Samsung Galaxy S4: WiFi not scanning for networks:

Hello:

Try these troubleshooting tips:

1. If this is happening at home, it could be your network setup is having issues, turn off your router/modem, wait 2 minutes, and then turn the router back on.. wait for the router to connect and then try again..

OR

2. Go to:
Settings > WiFi > (remove your network & then re-add it, don't forget you need your WiFi password in order to log back in)

OR

3. Go to:
Settings > Connections (Network Connections) > More Networks > turn on Airplane Mode > wait a few seconds and then turn off Airplane Mode

OR

4. Go to:
Settings > My Device > Turn Power Saving Mode Off

.

I got the same message yester day, first time I got this, if I find out ile let you know, can you do the same for me, if you find out before me thanks.

There may be few possibilities like the network not recognized,
locked with some other network,firmware not updated etc...
Network Not Recognized:
First, go to Settings-->Then go to Wireless and networks.-->Then Tap Mobile Networks (If mobile networks not found then tap More settings and then find and tap Mobile networks).-->Now tap Networks operators.-->After complete searching.... Then select your Network Operator (Like Vodafone, Idea, AirTel, etc.)
That's it, problem solved.

Locked with someother Network:
I suggest you can approach Prounlocking.com and specify the country,locked network of ZTE .Based on the availability you can get the permanent unlock code along with free instructions.

UN-updated firmware or software:
Select Software Update and Wait For It to reboot and Completed Update Completed!

I have 2 sgh-m919 galaxy s4 s from TMobile. Both phones were randomly showing the message "sim card not detected restart" and phone would reboot.. sometime would have to reboot 2 or 3 times before i was normal. I tried many of the net poste solutions including paper on sim card, clear cache, new battery etc. Nothing worked

This week i was ready to buy a new phone.. but was sure the phone wasnt the problem. I started deleteing apps one at a time and found the problem. It is GOOGLE MAPS !!! G0 into settings / more / application manager / slide over to all/ down to Maps /clear cache/ uninstall updates / force stop. Then turn off phone and restart. When you go to use maps or waze again when it asks for permission "decline" it will still work and you wont see the sim not detected restart message again.. Google the words google maps crash or reboots and see how many phones crash. Galaxy s4 happen to have the dialog box that makes it appear to be a hardware problem! Googles motto use to be "First do no harm" please reply if this works for you

Good luck!

Hi. You can unlock your T-mobile network locked Samsung Galaxy S4 safer and easier using unlock code. You can get the accurate unlock code for your Samsung Galaxy S4 from Unlock-Zone.Com at affordable cost.
-<()>--<()>--<()>--<()>--<()>--<()>--<()>--<()>--<()>--<()>-
UNLOCKING INSTRUCTIONS
-<()>--<()>--<()>--<()>--<()>--<()>--<()>--<()>--<()>--<()>-
Method 1:
1 - Switch ON your Samsung Galaxy S4 with a NOT ACCEPTED SIM Card.
2 - Samsung Galaxy S4 will ask for "Password".
3 - Enter the Unlock Code.

OR (if the Samsung Galaxy S4 shows "Insert Correct SIM Card")

Method 2:
1 - Switch ON your Samsung Galaxy S4 with a NOT ACCEPTED SIM Card.
2 - Don't bother about what's being displayed on your Samsung Galaxy S4.
3 - Compose : #0111*CODE#.

Download the manual here: http://www.samsung.com/latin_en/support/model/GT-I9192ZWLTPA-downloads
GALAXY S4 Mini Duos

call samsung toll free no
or go to samsung store/service centre
they'l upgrade it properly
sometime we are not good to handle it ie how to upgrade/restore

Enter your 15 digit IMEI
>>>Before we can send your unlocking code we need you to do something for us first. Every phone has a code that is as unique as a fingerprint, it is called an IMEI number. To locate your unlocking code we need you to provide us with your IMEI number. (You can either locate your 15 digit IMEI number underneath your battery, usually on a label, or alternatively you can simply dial *#06# on your phone)
Unlocking code is requested for your IMEI
>>>Once we have received your payment we send a request for the unlocking code for your Pantech Duo. Within 48-72 business hours (excluding weekends & holidays) of us receiving your payment we will send you your unlocking code with step-by-step instructions on how to enter it
Your Pantech Duo is instantly unlocked
>>>After entering the IMEI unlock code, your phone is instantly unlocked and ready for use on any GSM Network. This is a permanent unlock and your device can never be locked again