Hello,

I am currently living in france, and as I had troubles with the internet in classic cable I thought about using a 4G router with a sim card as i have good internet in my phone. so i bought a second sim card, active it and put it in my TP-Link TL-MR6400 300 Mbps 4G Mobile Wi-Fi Router.

the thing is that the internet is awful, if i compare it with my sharing internet using my phone, it is literally like 25 times slower using the same sim card in the same apartment.

I do not understand what is my issue, might be a bandwith problem? (my phone has only max 4G it does not have 5G). so right now my router does not really useful... maybe changing the anthenas of the router? I dont know... the router shows 3 bars most of the time and sometimes 2 (when i test and compared the two it was at 3 bars). the sim cad is from the FREE company (actually from willMyphonework as it gives for all bandwidths:

2G network 900 and 1900MHz
3G 900 and 2100MHz
4G LTE band28-700, band3-1800 and band7-2600MHz

in the free page i only found information for the 4G which also mentionned 2600MHz

any help would be appreciated, if changing the anthena could improve savage the router i would prefere this approach, if not at least a recommendation of an unexpensive router that will work with this sim card would be appreciated, it should simply cover 2 rooms separated by a wall max 40m2 between the two (and in the middle of the two rooms, a toilet room which only has a toilet so pretty small). the router will be next to a window