OB loses data connection intermittently - LG Optimus Black

Whether in sleep or awake mode the phone will lose the 2G data connection. Network signal is full strength. If I disable mobile data and enable, connection is restored. But after about 10-15 mins same issue happens.
I have tried all sorts of ROMs now. Huexxx, CICI, CM10, CM7...Seems like a hardware or network problem.
Customer service keeps saying to use the APN settings properly and are of no avail.
Any other ideas..??
Thanks.

Have you try using another sim card from another operator?

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I'm using CM5 Test 2 which is not the latest. Could it be an issue with my radio?
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Question Wifi <-> Mobile switching?

I have this strange issue that has been with me almost since the beginning. I haven't been able to trace when it happens, but it now seems almost 100% of the time.
I only have WiFi in the house (wifi6, if it matters). If I go out, I only have 4G (I left only 4G and disabled 5G). I have no data until I put the phone into airplane mode and back, or I disable and re-enable mobile data.
Same thing when I go back in the house: no data until I disable and re-enable WiFi.
I've disabled the option for 'always-on mobile data' or similar, it's quite a battery drain if there's no cell signal.
Seems like a very strange bug, I don't have this with any of my other phones.
So you have both WiFi and 4G enabled and they don't switch seamlessly?
Exactly. I always have to restart each one of them, usually by toggling airplane mode. Was wondering if anyone else ran into this issue.
Ok this really is strange. There are 2(!) different toggles to enable data switching between WiFi and 4G, but for me it works flawlessly without them! As soon as I get out of my home WiFi range, 4G kicks in, and when I get in range again, the phone connects to my WiFi...
Hi, i have this problem too but it's not always.
I have a wifi 6 router too.
I also have problems switching from wifi to 4g. Need to toggle airplane mode on/off. 5g deactivated. No wifi 6 here.
I always assumed my vpn is causing problems during the switch to 4g. But hearing others have the same problem i would assume its zenfone problem.
I never had any issues in this area with my ZF8. With the option to have cellular always on I could walk out of my WiFi zone during a video call and no drop or short pause would appear.
With this off the network need a few second to work, and some apps need to be refreshed/restarted to gain connection. Never needed to toggle connection for this to work.
Maybe a reset would be enough or check for updates.
Ah, exactly! It does not necesarily need a network restart, but some apps just lose connection for a while, which can be from a few seconds to >1h. Which is even more weird as the icons are showing full connectivity. I would go out of the house, do stuff, come back later and I would only get the notifications when I'm back inside the house.
Rarely I had the connection drop completely (no signal) when switching, but I haven't noticed this happening since the last update.

Question 4G connection problem

I am having realme 8 128-6 GB. The problem I am facing is that when I turn on my data connection, it starts on 4G but suddenly it shows EdGe Connection (2G) and then it turns off, that is the data prompt (the up and down sign associated with data connection). I have to manually turn the data connection on and off again to fix that. This problem doesn't occur with other phones having the same carrier's sim card. Does anyone have a solution for this?

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