A certain Mr. Jack asked you to phone back.

有个叫杰克的先生让你给他回电话。

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If you get lost without a phone or a compass, and you literally can't find north, a few tricks to help you navigate back to civilization, one of which is to follow the land.

如果你在没有电话或指南针的情况下迷路了，你真的找不到北，有一些技巧可以帮助你导航回到文明世界，其中之一就是跟随陆地。

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He used to make late-night phone calls to his wife back home.

他过去经常在午夜给家里的妻子打电话。

《柯林斯英汉双解大词典》

Today, the hapless youngster innocently applied webOS Doctor in a bid to reset his phone back to factory and wouldn't ya know it?

ENGADGET: Palm webOS 1.2 leaked, plugged in record time

The user writes that he brought the phone back to the UK retailer that sold him the phone, Carphone Warehouse, who passed told him they would pass along the handset to be checked out.

FORBES: Samsung Investigating Report Galaxy S III Caught Fire

One novel twist in all of this is that T-Mobile will offer to purchase back your phone if you don't want to keep it.

ENGADGET: Switched On: Unconventional, but not uncompromising