Verizon, AT&T and the rest of the US wireless industry have a big boast for this year’s crop of smartphones: Thanks to network upgrades, devices will be able to download as much as a gigabit of data in a single second — speeds 100 times faster than before.
But that won’t be the case for Apple ‘s newest iPhones, devices to go on sale later this year, leaving the company’s most important product potentially lagging behind the data performance of rival smartphones.
The reason stems from the delicate and sometimes-complicated way Apple manages the supply of the components embedded in its flagship

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