1. Appiah Smart's Avatar
    My samsung galaxy s5 model G900P always shows
    INVALID SIM CARD after i mistakenly wipe
    EFS/NVM with z3x samsung tool pro software.
    I upgraded my phone from 5.0 to 6.0.1.
    after doing this,it started giving me problems
    anytime i switch on the phone.
    such problems are: 1)the battery drains faster.
    2) the phone always shows checking device
    status continuosly anytime it is switched on.
    3)no sim supports LTE/CDMA network mode.
    4)NO 4G network data only 3G network data
    and making browsing too slow.
    5)reactivating and a whole lot without end
    anytime i switch on the phone.
    The above listed number 1 to 5 are the issues
    that i was facing so i connected the phone
    to laptop with usb cable to solve it but
    i couldn't.
    Z3X SAMSUNG TOOL PRO was the app.( repair mode)
    that i was trying to use to solve and
    mistakenly, i go to wipe EFS/NVM but after
    processing the phone did not reboot.
    So i disconnected from the usb and remove
    the battery and inserted it again.
    I switch on the phone and now the phone has
    also started INVALID SIM CARD.
    PLEASE PLEASE PLEASE read this and help me
    with solution to the listed above 1 to 5 and the invalid sim card.
    please help me save my phone.
    03-04-2019 09:04 AM
  2. Rukbat's Avatar
    You have to repair the problem with the EFS - put the proper IMEI, etc., back into the phone. The bad EFS data is what's causing all the other problems. If you can't do it, you'll have to find a repair shop that can (most won't [and won't work on any phone you messed up yourself, hardware or software] or can't). And Sprint isn't going to be much help. Most "Sprint" stores are actually independently-owned sales outlets and couldn't repair a phone if their lives depended on it.
    03-04-2019 12:58 PM

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