The comments by old hacker are absolutely right on. I have returned my Cruz T510 to Velocity twice for repairs because the unit will not tether to my PC and many common apps just fail to work correctly. I requested the second time that the unit be replaced and after 12 days got the old one back and it still is not at all working correctly. I got the following email from Velocity and it says it all!
>>>>>>I am David Taylor, supervisor of the Cruz tech support call-center and administrator of warranty services. I personally worked on your device when it was last here. I updated it to our latest version of ICS (Android 4.0.4), tested it's video and audio playback, tested the Wi-Fi, storage, tethering, and various pre-installed apps. All functioned normally. I tethered your tablet on more than one PC and had no difficulty at all. I did not test Kayak or GasBuddy because I am familiar enough with these apps to know that they both rely rather heavily on Fine Location Services. Since this tablet is not equipped with a GPS device, these and any other apps that rely on Fine Location Services will not function as intended. I did install and test SuperBox, not being familiar with it at all, and found that it was not designed for ICS, but for a phone display. ICS tried to manage the app display in compatibility view, but the app seized up the tablet and forced a battery reset. This tablet will not run some older apps without error because they are not designed for use on a newer operating system. This tablet will not run all newer apps as designed because it lacks certain hardware or software (ie: GPS, Bluetooth, 3/4G, discreet GPU, DLNA, stereo speakers, LED flash, physical keyboard, D-Pad, digital compass, gyroscope, proximity sensors, near field communication, light sensors, charging LED, various multimedia codecs, drivers, etc.). As it pertains to apps, we do not warranty that the device will operate without interruption or error.
I understand you think this tablet is defective and desire a replacement. I disagree. If the tablet behaves normally here, and doesn't at your location, I believe if we were to replace the tablet, you would have the same experience as with this tablet. Therefore, my staff have been instructed not to RMA the tablet again unless there is a legitimate reason for RMA (ie; a manufacter's defect in the hardware). If you have any questions, please let me know.
David Taylor, Cruz Team<<<<
Flat out refuse to accept that a customer is not happy with a product and will not replace it. The software DOES NOT fix the problems with rotation and screen going wacky. The T510 is a very poor product and is just a cheap version of the Eken A90 available from China suppliers for about $140. I purchased the T510 from Velocity because I wanted to make sure I had support if it was not to my liking. Now Velocity says they will not support the thing and refuse to replace it with another. They say (at least I read the above to say) that they are all poorly made and do not operate well.