Phone GV Extension
Description of App
Phone GV Extension is a system extension (NOT a standalone app) that seamlessly integrates Google Voice phone calling capability (all 3 available GV dialing methods, Direct Dial, all Back, and Offline Dial, are supported) into iPhone’s Phone module (ANY apps). iOS 4.x (including 4.0, 4.1, 4.2, and 4.3) are supported.
With the extension, phone calls routed through GV can be made directly from ANY apps (e.g., Phone, SMS, Contacts, Safari, Voice Control, etc.). 5 modes available: GV Direct Dial, GV Call Back, GV Offline Dial (with the 2nd and 3rd and an a-list it uses no minutes; moreover the 3rd uses no data), Carrier, and Ask Before Dialing.
Also provides a Dialing Rules Editor app to edit advanced dialing rules for per-phone-number and/or prefix (e.g., +1) mode settings.
Also, it provides the same calling experience as carrier calls in Phone app: the real recipient caller ID’s are displayed in dialing & in-call interface and in Call History instead of random GV #’s. You get a 100% native calling experience with your GV account. When a phone call is routed through GV a “GV Call” label is shown on the in-call interface. Press the “i” button to see detailed info.
Version
Free or Paid
Compatibility
VoiceOver Performance
Button Labeling
Usability
Other Comments
This doesn't install a new icon on your screen, but instead, adds a button in your settings so you can configure things.
Current Version: 1.1.2 on Cydia
Supported iOS Versions: 4.0, 4.1, 4.2, 4.3
Free trial for 5 days and beyond that a license is required at $2.99.

Accessibility Comments
This app is fully accessible with Voice Over.