4g Question (LTE vs. HSPA+)

Depends on the software available from apple and your carrier. Right now AT&T does not give u option to turn off 3G. Other carriers do.

AT&T does not give me option to turn off LTE from my Nokia Lumia 900.

So it's carrier related whether AT&T will give u option to turn off LTE to conserve battery. But u always default back ton3G/HSPA etc when no LTE connection is available.

Verizon I can switch off LTE to CDMA on my galaxy nexus LTE.

 

I doubt it would turn off HSPA+....a lot of the phones with LTE display a LTE logo, a 4G logo, and a 3G logo. Yours may fall back to the 4G logo or even if it does show 3G it will probably be HSPA+ speeds. If someone has a S3 or another LTE phone and could turn it off and test the speeds for you, that would be perfect.

 

The best guess is that it will probably be like how the iPad handles it. There is an actual toggle to turn LTE on and off. With LTE off the iPad uses hspa+/hspa.

 

On the 4S? Not for me. I don't have that option.

 

Yep. On the 4S AT&T iPhone there is no option to disable 3G.

 

As far as I know... There is not much AT&T can regulate when it comes to the iPhone... Especially not when it comes to software. Apple wouldn't give them that power. My iPhone on AT&T lets me toggle 3G because it can fall back to Edge.

What carrier do you have? Verizon and Sprint iPhones are only compatible with their 3G networks (I think), so you cannot toggle off 3G because then you would have no cellular data. Thus, they only give you a toggle for "Cellular" data. With AT&T, the iPhone can drop down to Edge when 3G is toggled off.

My Sprint iPhone for work does not allow me to toggle 3G, only cellular data.

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Can the 4S connect to the Edge network?? Could that be it?

Thats interesting, I never looked at it on my 4S before I gave it to my girlfriend. The iPhone 4 I am using until Sunday has the toggle, and every other iPhone I have had before it allowed me to toggle 3G on/off.

ADDITIONAL: Then it is not AT&T, it must be the 4S then, because mine is Sprint, and it does not allow it. I would guess for the new iPhone that it would work like the LTE iPads

 

as far as i know, hspa+ and 3g use the same radio, as the lte is a different one.

 

Correct. iPhone 4 has the toggle with AT&T, the 4S does not. One of life's mysteries But the 4S happily seeks out an Edge connection if a 3G/HSPA+ connection isn't available.

 

Hmmm... That is a mystery

 

Turning off LTE via software doesn't save too much battery, usually none at all. The physical hardware is always powered whether its being used or not. I've owned plenty of LTE devices and experimented with this quite a bit.

The most obvious was my Motorola Xoom, it was 3G on purchase then sent back to Motorola for the LTE card installation. Battery life took a severe and obvious hit and since I knew what it was prior to even having the LTE card its very easy to compare. I've seen people remove the LTE card when they upgrade to a new tablet but still use the Xoom on wifi only since it gets better battery that way. Turning it off doesn't do squat...

Now Apple may make some sort of tech to physically turn the power off but I find that highly unlikely because Apple like to keep it simple and everything stays on all the time. Plus their LTE chip will be a lot less of a power consumer then what's available today.

 

Settings > General > Network > Enable LTE *off* on next iPhone. Then you will be on HSPA+.

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What? So what you are basically summing up is that Wi-Fi doesn't turn off when you flick the "Wi-Fi toggle" in settings? The LTE does turn off.

 

Well there should be at least a way to turn off cellular data, which would turn off LTE since at&t uses LTE for data only, and 3G and edge for voice and data.