ER05 Error


    As of last week I've been getting the ER05 invalid sim error on my LG G3. It comes and goes but tries to restart my phone and DOES about 90% of the time. Ive had the same sim forever and am not sure how to fix it... The phone is telling me an upgraded sim is required. That happens 3 seconds before it attempts a restart. I'll say this started when my CM Security updated. Anyone have any ideas how to fix this without a large rock or boiling magma bath?

      All replies

      • Re: ER05 Error

        Remove CM security first and foremost.  If that does not rectify, you probably need a new SIM from T-Mobile.  Visit a store or call customer care or contact T-Force on social media.  There may or may not be a charge for a new SIM.  Do not reinstall CM.  Cheap Chinese adware that does more harm than good.  You can do most everything it does from your phone's settings menu.

        1 of 1 people found this helpful
        • tmo_marissa

          Re: ER05 Error

          Hey spidermonkey11664!  I just wanted to check in and see if you'd updated your SIM card - how is everything going?  Boiling hot magma avoided?


          - Marissa