... So, after 3 weeks in use a few additions.
The battery pack is really great. I had him in spite of normal operation with 2 sim cards, standby time and about 30 minutes daily phone calls after 16 days !!!!! charge.
The already well-known problem with the poor readability of the keyboard when the lighting terms, I regret to confirm. If it is not level is quite dark, the buttons are barely legible. The doing the SMS write despite QWERTZ not faster, because you always look for the correct letter. The operation, however DualSim works without objection.