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Good evening, I have the following problem and I did not find a solution in the forum, I saw that everything indicated should be done to restore the official rom if there are problems but it did not work, then I describe the problem.
Problem
In the street or any open place, the 4G or 3G signal is maintained at maximum almost all the time, as soon as I enter a room or closed area the signal changes if I am near the exit approximately 4 meters it changes to 4G / 3G / E with 2 bars and changes to null when I get away from the exit, it does not connect with the operator and does not allow making calls, nor does the data work, only when I go out to an open area, the signal returns.
Already done:
1 Factory restore
The problem remains
2 Tool used SP Flash Tool
In all cases the "Firmware Upgrade" flashing mode was used, except with the OTA version of point 3.3.1.
2.1 SP_Flash_Tool_v5.2052.rar
2.2 SP_Flash_Tool_v5.2112_Win.zip
3 STOCK ROMs used
3.1 UMIDIGI_S5Pro_20210107.V3.04.rar
3.2 UMIDIGI_S5Pro_20200702.V3.02.rar
3.3 UMIDIGI_S5Pro_20200422.V3.01.rar
3.3.1 UMIDIGI_S5_Pro_V1.1_20200702_2047_update.zip
3.4 UMIDIGI_S5Pro.E_20201130.V3.04.rar
In the case of this ROM the change is May when making calls change the signal from 4G with 3 bars to 3G with 2 bars and the call cannot be made
Reinstall the latest Rom UMIDIGI_S5Pro_20210107.V3.04.rar in all cases the same error exists.
Country: BOLIVIA
Operator: ENTEL
Please any solution
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signal in room minus 4 meters
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calling in room minus 4 meters
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signal strength
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