Failing to restore my iPhone 4S from iCloud backup over wifi - what to do?

i have been trying restore iphone 4s on icloud since yesterday. invariably, fail message iphone no longer connected internet.

wifi on iphone connected being used 4 other computers have no problems maintaining connection internet.

currently, estimated time remaining restore 11 hours. has come down 52 hours. on broadband connection of 120mb/sec down , 9 mb/sec up.

size of backup on icloud trying restore iphone 8gb.

please advise.

 

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