No matter whether iPhone 4s, 5, 5c or 5s: If you want to use the Internet with Blau.de on the go, you have to make the appropriate settings on the [iPhone-> iphone] under "Settings> General> Network> Mobile data network", otherwise you only get the message that the mobile data network could not be activated. You can see what you have to enter there:
MMSC: http: // mms / eplus: 5080
MMS Proxy: 22.214.171.124:8080
Max. Message size: is not required
MMS UA Prof URL: is not required
Update: Yes, MMS also says internet.eplus.de for me - that probably doesn't work, but I don't use MMS anyway, so it's wrong on the screenshot and still doesn't bother me. ;-)
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Jens has been running the blog since 2012. He appears as Sir Apfelot for his readers and helps them with problems of a technical nature. In his free time he drives electric unicycles, takes photos (preferably with his iPhone, of course), climbs around in the Hessian mountains or hikes with the family. His articles deal with Apple products, news from the world of drones or solutions for current bugs.