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The Samsung Galaxy S23
noo_billy's profile



1 Message

Saturday, March 3rd, 2018 6:03 PM

Please help me to unlock the SimLock for Samsung Mega 6.3

I live in Hong Kong , China.

Recently, I bought a smart phone's motherboard from E-bay) to repair my Samsung Mega 6.3(I9205)(Serial Number:

The phone is successful to boost up but the phone pops up a Invalid SIM card notification.

After some Google search, I found that the motherboard that I replaced to my phone came from AT&T Samsung Mega 6.3(SGH-I527)(Serial Number:


I tried to submit two unlock forms to request the unlock code but I haven't received any unlock password emails yet.

1st try,

Device IMEI number:
Date: 03-Mar-2018
 [edited for privacy – please do not post personal information]


Therefore, I hope someone can help me to get the SIM Unlock password.

Community Support


221.4K Messages

6 years ago

Hello @noo_billy!

Welcome to the Community Forums! It's certainly understandable why you would wish for this device to be unlocked. When you have a phone unlocked from its original network, the benefits are numerous!

We are going to need some information from you so we can get in contact. I’d like to reach out to you to get some further details about this. I’m going to be sending you a private message. It’ll appear in your Forum’s Inbox. I look forward to working with you!

Donna, AT&T Community Specialist

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