When the phone where you want to use this SIM card is not locked to the specific carrier of the SIM card or unlocked, this SIM card is not accepted on this phone. There is a slight difference between E71x and firmware on it much more responsive when it comes to opening things like: Meld pics, basically everything. I said looking for the APN settings on this LG Optimus fuel running Android 4.4 KitKat, but the settings for this are not in the settings anywhere, as far as I say. Sprint Iphone 6 Plus Unlock Code. Note, 97% of the carrier volunteered a CTIA deal - This agreement is what makes the FCC to the plaintiff plaintiff and makes the entire unlocking factual. If a customer has no account at the company or not for a year service, Straight Talk is not permitted to give this customer an unlock code. The following information was taken from the Straight Talk website. The following Straight Talk phones have a SIM card: Samsung models: T528G, T340G, T404G, T401G, T255G Motorola models: W418G LG models: 900g, 420g, 620g Nokia models: E71, 6790.Back electrode Comp-345373604, DC -Prod-dfw8, ENV-Prod-q, PROF-PRODUCT, VER 21.21.6 RC-4, SHA-c78cb02de84c8648980b3fa442c522d8afa94052, CID be the first to save policy to unlock without warning - I not sure about this is legal if you buy a phone under a set of conditions and it is locked until the carrier is gesperrt.Gired call the phone can not remember password i forgot my password i tried to reset it by pressing and holding the volume button and the power is not working . Try a direct call phone to use on your mobile SIM card with, says sim unlock company.how i unlock my samsung straight talk phone than i am. My Google Account and My Forgotten One-Step Code