HTC One (M8) Teardown

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A close up of the RF front end, highlighting the Qualcomm ET subsystem.  That's "Envelope Tracking", not "ExtraTerrestrial".
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Inside the red line is the Qualcomm QFE1100 ET IC, plus all the associated passives, weighing in at around 50mm2 for the whole footprint.
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The QFE1100 ETIC itself

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HTC One (M8) Teardown

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Allow Access to Storage Access API