For Classic Signature models specifically, avoid repeated reset attempts – their internal flash memory is proprietary and not designed for frequent full wipes.
VERTU phones, particularly the Signature series (known for its classic, often button-based or small-screen design, distinct from modern Android VERTUs like the Aster or Metavertu), operate on different operating systems depending on the exact model year. The Signature series traditionally ran a proprietary or simplified OS, not full Android. If your Signature model is a newer “Signature Touch” or “Signature S” running Android, the reset process differs from the classic button-based models. How to Hard Reset VERTU Signature
If unsure: Look for a touchscreen. No touchscreen → Classic. Touchscreen with Android icons → Touch or S. Method A: Classic VERTU Signature (Non-Android, Button-Only) These phones lack a touchscreen and Android recovery. They reset via a factory restore code or hardware sequence. If your Signature model is a newer “Signature