shut down Aug 4, users had the option of migrating their numbers and phones to Virgin Mobile's new "Custom" service.
Like Zact, Virgin Mobile Custom lets users create customized plans from choosing between different amounts of voice minutes, text and data. Virgin Custom uses software from Zact parent ItsOn. While I'm sure some former Zact customers are happy with VM Custom, there seem to be a number of complaints. Some find Virgin Mobile customer service inferior to Zact's, light users arre finding that Custom is more expensive than Zact and roamers have discovered that off network roaming, which was included with Zact, costs extra on Custom.
For users who didn't make the switch to Custom and those who did and aren't happy it looks like at least some Zact phones will work on other Sprint MVNO Ting, which has a modular pricing structure similar to Zact and Virgin Mobile Custom's.
A post on Ting's forum confirms that the Zact Samsung Galaxy S III and Samsung Galaxy Victory can be activated on Ting, Zact's LG Optimus Elite and LG Viper can't currently be used on Ting because they are running a custom Zact ROM that blocks the normal Sprint and MVNO activation process according to Ting. Zact's ZTE Awe may also work on Ting but has yet to be tested.
If Zact phones work on Ting I don't see any reason why they shouldn't also work on other Sprint MVNOs that support bring your own phone, including RingPlus, Expo Mobile, EcoMobile and ChitChat.
Before you can use a Zact phone on Ting or another MVNO. You must do two things:
1) Get you phone released from Zact/Virgin Mobile Custom. The best way to do that seems to be by calling Zact at 855-341-4662 and asking them to "deactivate" your phone. You will probably have to leave a voicemail but Zact has reportedly been good about returning calls. You can also contact Zact by email at firstname.lastname@example.org.
2) Disable the Zact ItsOn software:
Dialing ##3282# (#DATA#)
Enter your MSL (if you don't know it Ting will give it to you as part of the activation process)
Related:Zact Users Migrating to Virgin Mobile Custom, Here's What It Costs
Prepaid Operator Profile: Ting
Sprint and Sprint MVNO Prepaid Plans Compared
Source: Ting via HowardForums