Sony released now the opensource archive for the Xperia Z2:
Several of the latest Xperia devices, including Xperia Z2, feature a self-contained sensor co-processor. This sensor co-processor makes it possible to continuously collect data in the background, without using the main application processor. This ...
Touchscreen works very well.
You can even use a pencil...
The Wlan seems not as perfect....
I use here a Wlan Router with 2.4Ghz and 5Ghz AC. But it is pretty useless. To use AC you have to sit near the router.
Even the 2.4Ghz range is not as goo...
It looks like they are compatible.
You find the specs in the whitepaper
D6503 UMTS HSPA+ 850 (Band V), 900 (Band VIII), 1700 (Band IV),
1900 (Band II), 2100 (Band I) MHz
GSM GPRS/EDGE 850, 900, 1800, 1900 MHz
LTE (Bands 1, 2, 3, 4, 5, 7, 8...
yes thats normal.
mine has the same ;)