Cell Network Leakage

1. This is a user-to-user tech support site. As stated in the Forum Terms of Use you agreed to when you joined, Apple doesn't participate or respond to posts, "officially" or otherwise.

2. As described in the iPhone User Guide, and ad nauseum in too many threads to count in this forum:

Settings > General > Network > Cellular Data > OFF takes care of this issue.

If you plug it in to power, wifi stays active when sleeping.

I must say that this manual step sticks out like a sore thumb.Additionally, I fail to see why this issue is lingering over 2 versions of the iPhone product cycle.

Not so much to the other 100 million iPhone owners....

Maybe if you were more technically astute you would understand that there's no way for the phone to keep tract of what's actually remaining in your data plan allotment. Also, there are frequently significant discrepancies between what the phone and carrier report as usage. Apple can't be put in the position of being held responsible for data overages.

Additionally, I fail to see why this issue is lingering over 2 versions of the iPhone product cycle.

What gave you the idea this is a "lingering issue"? Apple added the manual cell data override for this.

ArtyYeo wrote:

REF: https://discussions.apple.com/thread/2492572?start=30&tstart=0

This topic has been discussed and I searched this forum but have not seen any official response from Apple about this issue yet since the launch of iPhone4. It is still an existing issue in the iPhone4S.

Issue: when phone is connected over WiFi and Cell Network and it goes to sleep, its preferred network access while in sleep mode is to use Cell Network instead of WiFi.

This is not an issue, it is an intentional design decision. Because WiFi must maintain a constant connection to work (as opposed to cellular, which only connects when there is something to send or receive), if WiFi were on when the phone was asleep it would run the battery down in a few hours. Thus spawning thousands of posts about short battery life.

ArtyYeo wrote:

modular747 wrote:

I must say that this manual step sticks out like a sore thumb.Additionally, I fail to see why this issue is lingering over 2 versions of the iPhone product cycle.

Not so much to the other 100 million iPhone owners....

If the 100 million owners did not care, why are there so many posts in this forum about this issue, I wonder?

If 100 million owners DID care there would be a million posts about it, not a few hundred. And many of those few hundred are duplicates and multiple posts by the same people who didn't read the answers.

You can post a message on any subject and you will likely get a few hundred replies. That does not make the subject an issue. When there is a real issue (or at least one perceived as real) such as battery life under iOS 5 you will see a very large number of posts (over 10,000 in just 6 weeks). The WiFi question has been raised periodically over the past 4 1/2 years, and the answer is always the same. And there have been only a few hundred distinct posts in those 4 1/2 years.

Incidentally, I was referring more to iphone itself that recorded its own cell data usage.

As I already said, there are frequent and significant discrepancies between what the phone and your cell carrier report as usage, and there would be no reliable way to guarantee no overage from the carriers standpoint.

That's what I have used to see the cell data network activities while the phone is alseep.

Also, when you "see" anything on the phone, it is NOT asleep, by definition.

The bottom line is that only you are responsible for keeping tact of your data usage and you were given a manual means of defeating cell data use to avoid overage.

The iPhone is what it is. No one forced you to buy one if it doesn't meet you DEMANDS.

How would that help with push email or notifications... All that switching would do is to delay and cause errors in mail retrieval. Re-connecting to WiFi isn't instantaneous and uses more battery than just maintaining a connection.

Settings>General>Usage>CellularUsage>CellularNetworkData

That stats is maintained and captured by the phone itself, It has nothing got to do with the carrier.

Did you read what I said?? That's the whole point. What the phone says you use isn't necessarily what the carrier calculates. Using the phone's stats to automatically switch to WiFi wouldn't reliably protect you from overages.

You're welcome.