Just throwing in my experience with the contact issue, and by all means if Im wrong please correct me! If you go to the programs section and erase all the data stored and re sync your Google account all the contacts function properly. SMS does not give the "not a valid recipient message". Also be sure to cut auto sync off before you erase the data as your Google account might sync your empty contacts list. If you want you could even remove the account and then re added it after you do the contact wipe. This worked for me so hopefully it will work for someone else having this issue. One other thing I noticed is that restoring my contacts via the MIUI backup tool seemed to cause this issue so there might be bug in there somewhere, but as Charles Barkley says "I may be wrong, but I doubt it lol" Also I have not had any force close issue or boot loops with this port. I wiped data and reformatted before installing so if your having issue's do like the devs say and wipe and install clean.