Over at the Official Android Blog, just announced that it is dropping invites to its oject Fi MVNO (Mobile Virtual Network Operator). en we took an updated look at the service after six months of operation (back in December), we noted that wanted to accelerate growth of the service. This appears to be the first step. The lone oject Fi plan otherwise remains unchanged. You pay $20 per month, per line, for unlimited talk text. Data is $10 per GB, with unused data appearing as a credit on your next month’s bill. The MVNO uses Sprint T-Mobile’s networks, switching to whichever offers the best signal, makes liberal use of open -Fi networks. Of course, you’ll still need a Nexus 6, Nexus 5X, or Nexus 6in order to use the service. To make that a little easier to swallow, ‘s running a special promotion for the next month. If you sign up activate oject Fi, you get up to $150 off the Nexus 5X, wich means the 16GB version will set you back only $199, or the 32GB version $249. That’s a steal. If you don’t activate the phone on oject Fi, you’ll have to fork over the $150 out of your account, so don’t think about trying to sign up just for the cheap phone without ever using the service. y this matters: ‘s network is an interesting experiment that has enjoyed limited reach, primarily because of its restrictive invite-only system Nexus phone requirement. th lifting the invites shaving a lot of money off the Nexus 5X purchase price, they’ll probably boost their subscriber count get spur Nexus sales at the same time. Still, oject Fi will never be much more than a curiosity if it doesn’t start to support other popular phones.