IMSI catchers (fake cellphone towers). with @rival_elfpic.twitter.com/YroH2YzWc0
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You can force Unrooted Android to use Either, LTE or HSPA or WCDMA by dialling *#*#4636#*#* , selecting Phone information and then setting preffered network type from dropdown list. Some Android phones might not support this secret code
Oh yeah, wow, did not know this... Turns out my Pixel 4 is set to never fall back to 2G by default, which is nice to know :-)
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