iCloud backup restoring stuck on "Estimating time"

"iCloud backup restoring stuck on 'Estimating time': Guys, I just bought a new iPhone and chose to restore from iCloud backup during setup. Since then, it has been stuck on 'Estimating time'. I tried to reboot and WiFi connection is great but nothing helps. Have anyone run into this?"

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iCloud RESTORE Stalled:

Be connected to an external power soruce, and have a strong Wi-Fi connection.

• Force Restart:

You stated that you "restarted" your iPhone. A Force Restart is what to perform here; so, start with that. Go Here: Force Restart iPhone - Apple Support

• Plug your iPhone into External Power:

To avoid failures and stalling, have this plugged into an external power source, such as a iPhone > cable > power brick > into the wall.

• Perform this Using Wi-Fi:

Be certain you have a strong Wi-Fi connection (use your OWN network, rather than a public LAN)

1. Go to: Settings
2. Toggle Off: Cellular
3. Toggle Off: Bluetoth
4. Toggle Off: VPN
5. Toggle ON: Wi-Fi

• Turn OFF All VPNs

1. Go to Settings
2. Tap: General
3. Tap: VPN & Device Management
4. Disconnect: from [any VPNs]

If it comes to it, you might need to reset your iPhone to Factory Settings, and then perfect is as instructed.