Good phone but problems with WiFi

In addition to HTC, Samsung, LG and i-phone 3 experience I want to write the following review of the Sony Xperia E:
Currently I have our family fully equipped with Sony Smartphones (excluding subsidiary i-phone3).
We were always very satisfied when it comes to hardware reliability, ability to update to the latest Android operating systems etc..
Even I use for 2 months the Xpera Z, previously ARC, the family mini inter alia Here hun my experience with the Xperia E:

- When commissioning Wifi did not work properly with the Fritz box 7270, but could be integrated smoothly after completion of Installationsassitenten.
- Then have an update to Android 4.1.1 run because the old system probably some mistakes were (sh recessions.)
- After that everything worked properly.

Why the device:
- Fairly decent processing
- Fast modern processor
- Out of Memory RAM
- Handling
- Price
- Maturity in Stamina mode> 3 days

What speaks against the device:
- Wifi does not work with all routers. For example, FB 7050 (all Settin the router changed - no success)
- Camera not very good
- Headphones and use the MP3 player with original listeners do not sound good.

All in all a smartphone at a very attractive price - but the WiFi problems!