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Go Back   GSM-Forum > Product Support Sections > SIM Solution Products > R-SIM & SAM SIM

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Old 07-02-2019, 15:13   #1 (permalink)
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iPhonex rsim 14 v8.10

Hello All,

I have the following specs
iPhone X 64GB GSM
At&t Carrier iPhone - trying to use with Tmobile
iOS 12.3
rsim 14 v8.10
iPhone condition:
Not unlock -locked to At&t, no blacklisted IMEI, no iCloud lock, and no pass lock

Did follow the direction below to activate but when inserted rsim with Tmobile sim the iPhone would say "error performing request". I looked up online and found a way to trick the system to use rsim with att sim and modify the iccid in sim application. After saving the new iccid I did get accept and reinserted my Tmobile sim with rsim but same activation issue and sometimes it would say the wrong sim.

Question is, What am I doing wrong here? Please, If any expert who can direct me to the right procedure to activate the iPhone!!

1. Dial guide code: *5005*7672*0#, select the last option in the Operator list. Edit ICCID input: 89014104279202589925 and send.
2. Dial guide code: *5005*7672*0#, select ICCID to unlock in the Operator options, accept.
3. Reboot or take out & input the card directly. Activate the phone and enter the system for perfect and stable 4G

Thanks in advance!!!
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Old 07-02-2019, 15:53   #2 (permalink)
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iOS 12.3

hi ios must be 12.3.1 to make it work
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Old 07-03-2019, 19:33   #3 (permalink)
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iccd trabajando hoy

8901 4104 2702 2599 1842

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