[Q] (5.0.1) lollipop problem with i9506 reciving (wcdma) network

hi everybody, I'm new with you and I have a care with my i9506 android lollipop official firmware I9506XXUDOA6 the official version of the modem firmware is included in the following: I9506XXUDOA6 My problem is when I turn on the data mobile I only get the edge points if I manually switch to (wcdma only) I do not get any points if I put auto mode I have the edge, I have to test all modems (I9506I9506XXUAMI1,I9506XXUBMK7,I9506XXUBML2,I9506 XXUBML3, I9506XXUCNF3) and still the same problem, except with the (I9506XXUBMK7) detected no sim, then I want is the modem (I9506XXUCNI1) I had in kitkat to try it with this version of lollipop if not I have to maybe go back and reinstall kitkat worm (I9506XXUCNI1 ) region wher i am actually (ALGERIA) thank you for your help

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