Originally Posted by Wiggin
Just to re-write your list based on the technical explanations I've read:
1. Signal attenuation caused by something (your hand) blocking the signal.
2. Antenna de-tuning caused by direct physical contact with the antenna and/or bridging the gap between the two antennas.
3. The proximity sensor issue.
#3 I think is irrelevant to this discussion. My understand is that is simply a display issue with the the sensor not properly lighting/dimming the display when the phone is held close to your face.
#1 is the issue Apple says common to all cell phones. They are right about that. All cell phones, all radios, will suffer in performance when something blocks (attenuates) the signal from getting to the antenna. You don't need direct contact for signal attenuation. Just something between the receiver and the transmitter.
#2 is the issue Apple is completely ignoring/denying. Their design exposes the antenna to direct contact, which affects antenna performance. Anyone who has ever used rabbit ears on a TV knows this. Standing near
the TV can have a mild effect on the reception. Actually touching the rabbit ears has a huge
effect on the reception.
I disagree with your rephrasing of the issues involved, as I think your analysis confuses the issues in a way that distracts from the actual issues involved. To repeat, I think the issues are correctly defined as:
Originally Posted by anonymouse
- Attenuation caused by touching the antenna
- Complete data service [interruption] caused by bridging the seam
- Misfuntioning of the proximity sensor
Not being an antenna expert, I will defer as to whether attenuation or de-tuning is the correct word to describe issue 1, however, I don't think that changes the correct description of the issues. (And, no, I don't think one needs to be an antenna expert to correctly analyze the issues. Perhaps to solve them, but not to identify them.)
Issues 1 & 2 need to be distinctly and precisely delineated because issue 1 affects all iP4s, whereas, issue 2, based on reports, affects only some iP4s irrespective of location
*. On affected iP4s, bridging the antenna seam results in predictable and repeatable interruption in data service. On unaffected iP4s, it does not. The effects from simply touching the antenna vs. bridging the seam are quite distinct, with a random touch on any iP4
causing issue 1 and bridging the seam causing issue 2, but only on some iP4s
. This is a very important and defining characteristic of issue 2, which is not the case with issue 1, and strongly indicates that it is not a design issue, but some issue specific to only some iP4s.
You are correct, however, that Apple has not, at least in this announcement, addressed issue 2. That doesn't preclude the possibility that they are aware of it, investigating it, or may address it with a software update (if possible). They may simply not be addressing it at this time because they don't yet fully understand it. But this is in fact the primary issue that does need to be addressed.
I also disagree that issue 3 is irrelevant. Clearly this is causing some number of disconnected calls from the end call button being accidentally pressed. It's quite likely that at least some number of reported "dropped calls" are related to this issue**. So, I think it's important that this issue be part of the discussion.
* With 2 iP4s in close physical proximity to each other, a case where they should be receiving approximately the same signal, one iP4 may display this behavior while the other may not.
** This assumption is based on reports of "dropped calls" that don't appear in the logs as dropped calls.