iPhone Xs Max LTE/Wifi disconnect issue

Are you still experiencing these issues? I’ve been looking for anyone who might be experiencing the same issue I am, and it seems I’ve found one. I don’t have all of the issues you state, but I do have the WiFi issue. I will be randomly looking at websites online or inside of an app requiring internet connection, and it will just stop loading. The blue load bar in safari always stops at the same point and just hangs up there. Nothing will bring my WiFi connection back aside from turning off WiFi and turning it back on or turning airplane mode on and off. My phone will also typically experience this issue when it’s been asleep for a long period of time such as being asleep while I’m sleeping. This issue occurs anywhere from once to multiple times per day. I have not been on any other WiFi connection long enough to see if it’s just my home connection or a WiFi connection issue in general.

I’ve tried everything from a clean install to resetting my network settings as well as resetting the router and nothing seems to fix it. I had an iPhone X previously and never had this issue. Also like you, all of my other devices are connected to the same WiFi and don’t experience this issue. I’ve attached a picture showing that I have a WiFi signal and the spot where the load bar always hangs up.

Is this the AppleCare number you called: 0800 0201581

Contact Apple for support and service - Apple Support

I would suggest that you call the team one more time and advise that there is performance issue with wifi and cellular connectivity.

Thank you for the suggestion. I will head to my AT&T store tomorrow to pick up a new SIM card. I know for a fact my SIM card is at least a couple of years old if not older. That could potentially be the issue if it ends up being resolved for you. I already have 12.0.1 and that didn’t do anything for me. I’ll give the new SIM a try. I’ll also report back any findings I may come across. The only reason I’m skeptical that the SIM may not help is because my iPad Pro 10.5 has no SIM card, and it stays connected to my home WiFi from the same room with no issues. I’ll try anything at this point though. Thank you again for responding.

A new SIM card did not address the issue. I have to believe at this point this is something on Apple’s end. I just don’t know what else to do. Even if I go and get a new phone, I feel like it will exhibit the same behavior. An interesting point I’ve noticed is that if I’m online on my WiFi looking at websites or within an app at approximately 5:07 pm, like clockwork the phone WiFi will get hung up at this time. I’ve been recording when it happens during the day and how many times it occurs. This particular time has been a very frequent occurrence where WiFi stops working. If not this exact time, then any other hour of the day within a few minutes of that time (e.g. 2:09 pm, 3:07 am, etc). All other devices on my home WiFi do not exhibit this behavior. I’ve checked them to see if they’re connected at the same time this issue occurs with my iPhone, and they always stay connected. I guess I’ll go get a replacement phone. I’m not hopeful at this point. Very upsetting to pay this much for a brand new device and to feel like the best option is to return it for a refund.

New XS max and have issues with data and calls. Just does not work. First I rebooted started working, next day rebooting didn’t help. Went to Verizon and replaced simcard. I got an error saying NoSim evethough there was one. This is before putting new simcard. Watching today to see what happens.

Frus

So, I’m headed to the Apple Store this weekend to get a replacement phone. Honestly, I’m not real optimistic that this will address the issue. I’m worried there is some type of hardware issue or incompatibility with my router. I still have not been able to test to see if this problem occurs on other WiFi networks.

There is one new thing I’ve noticed with my issue. If I’m online or in an app requiring internet around the 6th or 7th minute mark of any hour, this is when the WiFi will hang up and stop loading. I can get online at 12:07 pm, 5:07 pm, 1:07 am, or 3:06 am and my WiFi will always stop working. Take any hour and tack on :06 or :07 and the WiFi will stop loading until i turn it off and on. I have not noticed this occur at any other point in the hour. My other iOS devices do not exhibit this behavior either. It is the strangest issue I have ever had with an iPhone.

Check and see if your WiFi cuts out or stops working around the :06 or :07 minute mark of any hour. Mine will stop working consistently at that point of any hour of the day. Your load bar seems to stop exactly where mine does.

My problem start on iOS 12.1.

When I connected to WiFi maybe 20 seconds later the signal bars gone and come back but the the LTE connection disconect and not connect when I get out from WiFi and never connect back to the internet. I have to switch ON and OFF airplane mode to get LTE back.

I talk to apple support and the take my iPhone diagnostics and the pass to engineers but they can’t fix the problem. I did bunch test turning OFF things. For me fix doing this but I don’t know if this was the fix.

I turn off LTE and use only 3g for couple of days, because on 3g the issue not happens. And after 2 days I turn LTE back ON. And this fix my issue.

I am having the same issue with my XS Max. I have to turn my phone off when I leave a WiFi connection to get back to LTE or 3G. My phone shows 1x connection until I restart it. I am hoping this can be figured out by Apple as it is becoming extremely frustrating.

I found solution (at least in my case)

I had same problems with my iPhone Xs, my Cellular wont connect to network.

I tried everything, switching Airplane mode on and off, switching Cellular on and off, reinstalled the whole phone,

after i did reset of the network settings and rebooted it helps.. but just for a while, after a couple of minutes it lost signal again :(

Then i tried this and it seems to solved my problem as far:

1

I manually select the proper Network selection (Settings / Cellular / Network Selection)

- there is option for automatic selection or manual, so i switched to manual and choose my network

2

I reset settings for Cellular data network (Settings / Cellular / Cellular Data Network)

after that my phone is still connected to the carrier network, its been 12 hours since that and phone is still alive.