Many paid tools (iRemoveTool, Checkra1n GUI apps) simply repackage the free checkm8 bypass and charge you $30. Avoid them. The open-source community has perfected the 4s bypass because Apple stopped updating the A5 chip's security in 2016.
If you define best as free, permanent, and usable for music, videos, and games → Legacy-iOS-Kit untethered bypass.
If you need cellular calls (GSM only) and iMessage → Serial number change (but only for experienced repair techs). iphone 4s ios 935 icloud bypass best
If you want a quick test without a computer → DNS proxy method.
On an iPhone 12 or newer, iCloud bypass is either impossible or requires expensive, unreliable server-side tricks. On the iPhone 4s (iOS 9.3.5), you have three main advantages: Many paid tools (iRemoveTool, Checkra1n GUI apps) simply
The best method today (2026) is a full, untethered bypass using a modified IPSW and a tool like Sliver or Legacy-iOS-Kit.
Verdict: Best for turning a brick into an iPod touch + Phone call device. Success rate: 98%. The best method today (2026) is a full,
| Method | Permanence | iCloud/App Store | Cellular | Difficulty | Cost | |--------|------------|------------------|----------|------------|------| | Legacy-iOS-Kit (untethered) | Permanent | No | No | Medium | Free | | DNS Bypass | Temporary (per boot) | No | No | Very Easy | Free | | Serial Number Change | Permanent | Yes | Yes | Very Hard | ~$20 (programmer) | | Paid Software (e.g., iRemoval) | Permanent | No | No | Easy | $10-20 |