Ntlg300gb Need users manual

If the following is not the manual, you may need to contact the manufacturer or a vendor for a manual.

https://fccid.io/2ALZXYUNTAB-H8/User-Manual/User-manual-3438452


YUNTAB H8 MID User Manual Shenzhen Wave Multimedia Co LTD

este es mi imei 011696007476288

SIM NOT VALID PROBLEM SOLUTION

As far as I know free codes does not unlock your phone, so even if you would find a unlock code or whatever you'd have to spend some money.
I would recommend the Unlock-Zone.com site is nearly perfect and they were recommended highly in the cell phone forums.
I used them to unlock my cell phone. contacted them and within 30 mins i had my unlock code and my phone was unlocked.
Hope this helps.

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that means your friend cheat you....

ask them for the manual

You can download from NEC support pages:
MultiSync EA261WM-BK User's Manual
MultiSync EA261WM-BK
user manual
MultiSync EA261WM-BK
user manual
MultiSync EA261WM-BK
user manual

check the power IC or the CPU, then replace it