Could not activate mobile data network
I have a data sim in my iPhone 4s - it has stopped working. Although I can recieve text messages I cannot access the internet. I have tried restarting, and resetting the network setings. This MAY have stopped working around the beginning of the month - ie when I think the 2g network disappeared - but I have 3g and as I said I can recieve text messages.
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The antenna in it might have died. I presume you are getting 0 bars. Does this get better when you move close to a tower?
Do a search for your local area, and check on the map where your towers are.
So, you are using an iPhone as a hotspot, instead of a modem. Does that mean it's putting in the wrong APN for data, which should be "connect"
Besides trying a new SIM, I dunno.
Hotspots better than an iPhone 4 arent fancy. The cat 4 ones cost $30.
Coles sells this one periodically for $30
However, in congested urban environments, you are better off using cat 6 and higher, because the band you are on often gets congested, but the cheap devices have a knack of getting stuck on the most congested or distant tower. You have to put some effort into getting a good connection. You have to beat other people who are being lazy.
Sorry I think I have confused you. I have a data-only sim in my iphone that (previously) allowed me to access the internet on the phone. This has suddenly stopped working and gives me the error "Could not activate mobile data network". I am not trying to use it as a hotspot, I just want to view webpages on my phone.
I presume you have googled that error, and have tried the resets listed. I know you ahve done stuff.
Just check that the APN is "connect", because an iPhone can install the wrong one on a data SIM.
Another thing you can try is buying a $2 Optus SIM, and see if you can find the Optus website.
It's possible that the data component of the Optus account is faulty. You presumably don't have another device to test the SIM in.
Thanks, yes I have tried all the reset suggestions. The APN is yesinternet - which seems to be what optus recommends. I tried changing it to "internet" which is another recomendation, but that also does not help.
Optus doesn't seem to recommend any setting for broadband SIMs as far as I can see. On Whirlpool forum, we had an educated guess that it was "connect", due to none of the hotspot modems ever having "yesinternet" preconfigured in their profiles. yesinternet is common on the resellers, but they also never publish APNs anywhere.
The general rule is "whatever works", but yours isn't.