I was not able to get a free unlock code for the mobile model that you have specified. suggest you can approach Superunlockcodes.com and specify the country,locked network of Samsung 870A .Based on the availability you can get the permanent unlock service along with free instructions.
Here you can get unlock codes for almost every model, samsung, LG, huawei, ZTE, Mototola, IPhone, www.chipunlock.com
How to Unlock Samsung Galaxy S5 Active SM-G870A AT&T
-Dial *#06# to find AT&T Samsung Galaxy S5 Active SM-G870A IMEI number
-Go to www.unlockninja.com
-Select Brand as:- Samsung
-Select Model as:- SM-G870A
-Select country: from where you purchased the phone
-Select network:- Locked network
-Enter Mail ID:-
-Update IMEI by following the login details:-
-get the AT&T Samsung Galaxy S5 Active SM-G870A Unlock Code at your email address with in 2-3 business days.
Steps to Enter AT&T Samsung Galaxy S5 Active SM-G870A Unlock Code
-Insert un-accepted SIM in AT&T Samsung Galaxy S5 Active SM-G870A phone.
-Turn on the AT&T Samsung Galaxy S5 Active SM-G870A phone.
-it will show Unlock Code screen.
-Enter Unlock Code and then press unlock
-Phone will be unlocked for ever to use any network
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Usually answered in minutes!
First, Why your Phone is locked?
When you purchase a cell phone it is often offered at a discounted price by the cellular network. In return for this generosity they “lock” your Phone to their network, so that you can only use their network for making and receiving calls. This means that you cannot use the SIM card of another network, and if you try to do so the phone will display “Phone Restricted”, “Contact Service Provider”, “Enter Unlock Code” or a similar message. Unlocking the phone removes this lock, allowing you to use your Phone on any GSM wireless network anywhere in the world.
if you want to unlock your phone go to UNLOCK NOW
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