Samsung Galaxy S4: How to open back battery cover:
1) Flip the phone over so you see the back cover.. 2) Locate the notch on the side of the phone with your fingernail and pull the cover easily up to unlatch that area and all areas around the phone.. With one hard pull you can easily take off the whole cover.. don't be shy, your Samsung phone is sturdy enough to handle it.
All the blue arrows in the below image shows where the cover clicks into the inside of the phone to keep it closed. 3.) when you need to put the cover back on the phone.. place the cover over the back part of the phone, noting that the camera hole in the cover goes at the top..
Then grip your left hand on the left side of the phone and your right hand on the right side of the phone.. apply pressure to each side to click the latches to the phone locking it in place.
Afterwards, run your fingers along the back sides of the phone to see if there are any bulges (a latch may not have clicked in place). Either apply pressure there to click it into place or you may have to take the cover off again and try again.
It's very simple and easy once you get the hang of it.
Bending the back cover will not damage it because it is plastic.. unless you bend it to crease it. Below is Samsung's durability test. https://www.youtube.com/watch?v=UrhCz6PnT78 (you may need to copy and paste this link to make it work) .
Samsung phones and probably most other phones store all networks detected throughout their lives unless you select them and tell them to "Forget" particular connections. This applies even when the network settings don't match the settings of the network you are trying to connect to.
I would suggest that you "Forget" the connection you are trying to connect to. After a while the phone will detect the network and if you tap this network it will ask you for a password. Enter this and it should connect it the network without trouble.
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Battery may not be charged enough to run the phone. Keep the phone off and connect it to a charger to fully charge the battery or use an external battery charger.
Be sure the The micro usb connector is fully seated and that the battery is actually charging. A loose connection may appear to start the charging process, but if its loose, it may not be continuing to charge. Check the % progress.
If your phone was stolen, your best bet is to go to your wireless carrier and let them know, they will block the imei so that it can't be use anymore. The S4 comes with Android Device Manager, which you can control your S4 from a computer, but this will only work if you activated the phone with your google account, try going to accounts.google.com and log in with your google account. Best of luck.
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