I had all the time "in use" Sony Ericsson X10 and Sony Xperia S (always been previously with the old K 800 mobile with "Schläppi" in the network) with two prepaid cards, since one party just monthly Flats (blau.de) and the voice quality is better and the other party (Fyve) the Internet "Run" .... Now I have after my X 10 after nearly 3 years is weakening so slowly, wanted a mobile phone that I can also use it as a mobile hotspot and 2 simcards permits and I must say I would not have thought that the part, sooo works well for the price. I was skeptical and was "a lesson" taught.
Although I have now 3 provider :-), (Congstar with ner 3000 Datenflat; so I'm a month with 40 EURO !!! which are variable, very well taken care of, because we occupationally at home now have no permanent connection) but since the Sony Devices All perfect "spark" (up to 5 devices, ie also laptop) running reliably and smoothly, seems to me nothing else in the house and I'm glad that we are also the fixed connection going and can think about flexible monthly, "what I would like to spend ".
So: If you want a reliable device that neatly on the net "on the go" is will be well served with the part. The battery lasts a long time, it is easy to handle, the apps run reliably and the change of the simcards thanks button on the device even what "for stupid" .... :-)
In addition, the price-performance ratio, the camera will also know what to call .... and of course is also super :-) thanks transmission by radio 10 seconds the database (phone book) back up to date.
I say: give away or even buy .... :-)
.... And last but not least ... THANKS Amazon, the devices are generally more favorable than the trade and shipping run generally always smooth and fast!