If you own an Apple iPhone 5, iPhone 4s or one of the early iPads with cellular connectivity, your device is about to be turned into a vintage technology paperweight by the GPS rollover problem that we wrote about in April. Before we explain why, we should say it is possible to avoid this fate by updating your device to iOS version 10.3.4 (iPhone 5) or version 9.3.6 (iPhone 4 and iPads).

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