Apple has not made any public announcement of this yet, but I have received word that there is a problem with some AppleVision 850AV and 850 displays (with serial numbers SWR729072947 to SWR7310FM947) producing very distinct colored horizontal lines when changing resolutions. This convergence problem is due to a component on the CRT/video board. If you have this problem, you should take your monitor to an Authorized Service Provider for a repair or replacement.
Is your phone battery always at 4 percent?
These battery packs will give your device the extra juice to power through all of those texts and phone calls.