3G/4G Connection unstable: mobile data active but internet goes down randomly

GeeM

Member
Nov 6, 2007
47
5
0
Hello guys,

I've had my OP5 for 2 weeks now, quite happy with it so far but I have a major issue with my 3G/4G connection which is very unstable.

When I am connected to Wifi network, everything is fast & smooth but as soon as I switch to 4G/3G, the data is very unstable: sometimes, the internet connection goes down for few seconds or minutes.

I can see the connection is active (3G/4G icon, no exclamation mark), the signal is good (more than 70% in most cases) but the data meter in my status bar shows abnormal transfer rates (below 2Kb/s). After several seconds/minutes of patience, the connection goes back to normal with very good (normal) transfer rates. It can work very well for several minutes (downloaded some HD movies within few minutes without interruption), then goes down randomly.

I already checked the SIM cards, network & APN configuration and everything is correct. I tried on a couple of SIM cards, on both SIM slots and the problem remains the same, whatever SIM card or slot I am using. The SIM card were tested in my "former" smartphone and work perfectly and in areas where the network and signal are stable and do not lose connectivity with my former smartphones, it only happens on the OP5.
I tested on several apps that require internet and the result is always the same: either the app says there is no internet connection, or it takes forever to load... This is not specific to an application.

My phone is rooted with Magisk 13.3, with the original OOS 4.5.8 ROM. I am using Netguard and AppsOps to control the apps accessing internet but I don't think this is the source of the problem because the Wifi works well and apps still access internet through 4G when the connection is up.

Any idea?

Thanks for your help ;)