hallo,
my contract is Up Mobile L, this issue happen many times when i am in Germany.
normally the internet connection is good from the beginning a few days, from some day, it will be reduced to 2G connection, if i restart my smart phone or turn on/off airplane mode once, it will be high-speed connection again, but only after 1-2 minutes, it is reduced to 2G again. if i try to select network manually, Telekom-4G or Vodafone always refuse my connect requirement, while O2-4G agrees, but after 1-2 minutes, it turns to O2-2G again.
it often happens when i am in Hannover Germany. and every time i checked my data limitation, it is sure i have more than 38GB available…
could someone tell me why it happens and how could i solve it? this problem really troubles me a lot.
thank you.
best regards