20 Most Recent Blackberry BERRY Z10 16GB FACTORY Unlocked GSM 2G 3G 4G LTE MODEL NO : RFH121LW GSM 2G & 3G 850/900/2100 & 4G LTE 800/900/1800/2600 Black - Page 4 Questions & Answers

It is a junk phone.

https://www.youtube.com/watch?v=wrPLV0n1ttk

you have to go to setting and scroll down and you can see like backup or restore you just enter in and then you can see the option of restore factory

Time for a new phone.

You must call Customer Care for the PUK code. Entering the wrong code can permanently damage your SIM card. 1. Contact Customer Care to request your PUK code. 2. Enter the PUK. 3. Select OK. 4. Enter a PIN of your choice. 5. Select OK. 5. When the 'Confirm New PIN' message displays, re-enter the PIN code. 6. Select OK. The Customer Care Number +1(800)243-0051 (Toll Free)

Device is dead. Need to replace the motherboard

No. Whatsapp is still very much functional on the device.

No this is not possible. If a phone is blacklisted, several bells should go off in your head. If you bought it blocked from someone, take it back because it is useless. If you took it from someone take it back with a huge apology. If a phone is blacklisted with a network carrier, then the phone is blocked on the Blackberry Server (RIM) Only the owner can have the handset unblocked. For this the original case reference number\ in most cases a Police case number. Proof of purchase and proper identification is needed So think again -Why is the blackberry handset blocked?

How To Unlock BlackBerry Z10 Z3 Z30 Q5 Q10 and Q20 By Unlock Code

Call your service provider.