[PCWorld]

Post your comments for New iPad Lasts 24 Hours as 4G LTE Hotspot here

[KLanD]

You know what.. the 4s and pretty much every smartphone on the market can do this too.

[CypherX]

How long before you go over the caps?

[rak1948]

CypherX, on 27 March 2012 - 05:29 AM, said:

How long before you go over the caps?

Theoretically in about 10 to 20 minutes. Real world - possibly within 2 hours

[crosswordbob]

KLanD, on 27 March 2012 - 05:20 AM, said:

You know what.. the 4s and pretty much every smartphone on the market can do this too.

The 4s doesn't have LTE—I can't speak for other LTE smartphones in terms of the 24 hour life, though.

[nonseq]

KLanD, on 27 March 2012 - 05:20 AM, said:

You know what.. the 4s and pretty much every smartphone on the market can do this too.

Hmmm. I haven't seen that data. Are you saying that smartphones are able to deliver as an active hotspot for 24 hours on battery? The iPhone 4 couldn't do that- I think. I would love to see some actual data on that. thanks

[RobertoRecine]

Does it blow up before or after reaching 116 Fahrenheit?

[crosswordbob]

RobertoRecine, on 27 March 2012 - 08:47 AM, said:

Does it blow up before or after reaching 116 Fahrenheit?

No.

[nonseq]

RobertoRecine, on 27 March 2012 - 08:47 AM, said:

Does it blow up before or after reaching 116 Fahrenheit?

Well, to try to give it some sort of context, the National Coffee Institute suggests that the ideal temp for serving hot coffee is 185 F. Other sources say that coffee at 116 F would be considered tepid or luke warm.

So far no explosions have been reported and no actual new iPad owners have really complained about this. Most complaining seems to have come from those who do not own/use a new iPad and do not plan to own/use one.

[steven8217]

nonseq, on 27 March 2012 - 08:30 AM, said:

KLanD, on 27 March 2012 - 05:20 AM, said:

You know what.. the 4s and pretty much every smartphone on the market can do this too.

Hmmm. I haven't seen that data. Are you saying that smartphones are able to deliver as an active hotspot for 24 hours on battery? The iPhone 4 couldn't do that- I think. I would love to see some actual data on that. thanks

I doubt that any smartphone can support 24hrs WiFi Hotspots and 4G-LTE without connecting to an external power source or a spare battery. Verizon offer 4GB Hotspot at $30 on 4G-LTE Android smartphone and my Galaxy Nexus is also a Retina display too. While connecting to two computers with light email and web browsing, I can easily burn 2G data in 8 hours (with 2 computers) so the challenge is not only on the battery hour, it is also on your 4G-LTE data cap. (Depends on areas and signal strength, I can get 15-25MB download and 15MB upload on my Galaxy Nexus thus you really need to watch out the data cap before you start paying $10 for each 1GB)

[KLanD]

crosswordbob, on 27 March 2012 - 07:32 AM, said:

KLanD, on 27 March 2012 - 05:20 AM, said:

You know what.. the 4s and pretty much every smartphone on the market can do this too.

The 4s doesn't have LTE—I can't speak for other LTE smartphones in terms of the 24 hour life, though.

No, it doesn't, but it should.

I'll give it a shot with my S2 this weekend if I have time. The question is, was it just sitting there doing nothing or was there actually someone connected to it surfing for 24hrs? I mean, I easily get 24hrs of life with 4G LTE, wifi, notifications, push email, etc. all on. I've just never tried to turn tethering on for 24hrs.

[KLanD]

nonseq, on 27 March 2012 - 08:30 AM, said:

KLanD, on 27 March 2012 - 05:20 AM, said:

You know what.. the 4s and pretty much every smartphone on the market can do this too.

Hmmm. I haven't seen that data. Are you saying that smartphones are able to deliver as an active hotspot for 24 hours on battery? The iPhone 4 couldn't do that- I think. I would love to see some actual data on that. thanks

I don't have any data either, however, I'm positive iPhone can last for 24hrs if you don't do anything that requires CPU, GPU(moderate to heavy load) or the screen. I think the key here is the "active" part. I don't see anywhere in the article that they were actually transferring data for 24hrs, just that it was broadcasting as a hotspot.

[KLanD]

nonseq, on 27 March 2012 - 09:35 AM, said:

RobertoRecine, on 27 March 2012 - 08:47 AM, said:

Does it blow up before or after reaching 116 Fahrenheit?

Well, to try to give it some sort of context, the National Coffee Institute suggests that the ideal temp for serving hot coffee is 185 F. Other sources say that coffee at 116 F would be considered tepid or luke warm.

So far no explosions have been reported and no actual new iPad owners have really complained about this. Most complaining seems to have come from those who do not own/use a new iPad and do not plan to own/use one.

I'd also like to note, that the average shower temperature is ~108F.. not too far from 116F.

[Nuke61]

KLanD, on 28 March 2012 - 06:42 AM, said:

I don't have any data either, however, I'm positive iPhone can last for 24hrs if you don't do anything that requires CPU, GPU(moderate to heavy load) or the screen. I think the key here is the "active" part. I don't see anywhere in the article that they were actually transferring data for 24hrs, just that it was broadcasting as a hotspot.

Go the the linked article about how the Verge did their testing:

Quote

Still, it's important to point out what those "right conditions" are. First and foremost — and easily the most inconvenient aspect of this — the iPad's beautiful Retina display must remain off if you want to reach the absolute maximum of its hotspot endurance. During our testing, we also disabled notifications and push email accounts known to slowly chip away at battery percentage. After configuring a nearby laptop to utilize our iPad's LTE connection, we ran a test that continuously cycled through web content on the machine. To our pleasant surprise, things ran largely in line with AnandTech's initial discovery. Perhaps that's to be expected from the massive 42.5Wh battery that rests underneath the new iPad's 9.7-inch display, but we're so accustomed to seeing LTE devour battery life that it's hard not to be taken aback. Best of all, we saw no evidence of dropped or stalled connections. That's not to say there aren't caveats here: LTE reception in our Manhattan office is top notch, and it remains unclear how things would fare in areas with weak signal.

Of course, Apple doesn't advertise its latest gadget as a $629 wireless router, but the idea that you can turn get this kind of sustained operation from the new iPad is reassuring. For those in locations with LTE service, it also makes a compelling case for opting to go with the new iPad on Verizon rather than AT&T, at least until Ma Bell enables the feature for its customers.
http://www.theverge....ur-battery-life

[KLanD]

steven8217, on 27 March 2012 - 07:10 PM, said:

nonseq, on 27 March 2012 - 08:30 AM, said:

KLanD, on 27 March 2012 - 05:20 AM, said:

You know what.. the 4s and pretty much every smartphone on the market can do this too.

Hmmm. I haven't seen that data. Are you saying that smartphones are able to deliver as an active hotspot for 24 hours on battery? The iPhone 4 couldn't do that- I think. I would love to see some actual data on that. thanks

I doubt that any smartphone can support 24hrs WiFi Hotspots and 4G-LTE without connecting to an external power source or a spare battery. Verizon offer 4GB Hotspot at $30 on 4G-LTE Android smartphone and my Galaxy Nexus is also a Retina display too. While connecting to two computers with light email and web browsing, I can easily burn 2G data in 8 hours (with 2 computers) so the challenge is not only on the battery hour, it is also on your 4G-LTE data cap. (Depends on areas and signal strength, I can get 15-25MB download and 15MB upload on my Galaxy Nexus thus you really need to watch out the data cap before you start paying $10 for each 1GB)

First, only Apple devices have "Retina Displays" cause "Retina Display" is a trademarked moniker created by Apple.

I have an S2 and under normal use, 4G-LTE, WiFi, push email (2 accounts) and notifications all active my battery easily goes all day. (6am to ~9pm), it usually still has ~35% charge when I plug it in at night. Under heavy use, I get around 6-7hrs.

I agree with you on the data, I would run through my limit trying to do a constant data transfer for 24hrs, but they don't mention if they were actually using the hotspot for 24hrs.

[Nuke61]

KLanD, on 28 March 2012 - 06:55 AM, said:

I agree with you on the data, I would run through my limit trying to do a constant data transfer for 24hrs, but they don't mention if they were actually using the hotspot for 24hrs.

They were using the hotspot feature with a laptop. See quote above.

[KLanD]

Nuke61, on 28 March 2012 - 06:48 AM, said:

KLanD, on 28 March 2012 - 06:42 AM, said:

I don't have any data either, however, I'm positive iPhone can last for 24hrs if you don't do anything that requires CPU, GPU(moderate to heavy load) or the screen. I think the key here is the "active" part. I don't see anywhere in the article that they were actually transferring data for 24hrs, just that it was broadcasting as a hotspot.

Go the the linked article about how the Verge did their testing:

Quote

Still, it's important to point out what those "right conditions" are. First and foremost — and easily the most inconvenient aspect of this — the iPad's beautiful Retina display must remain off if you want to reach the absolute maximum of its hotspot endurance. During our testing, we also disabled notifications and push email accounts known to slowly chip away at battery percentage. After configuring a nearby laptop to utilize our iPad's LTE connection, we ran a test that continuously cycled through web content on the machine. To our pleasant surprise, things ran largely in line with AnandTech's initial discovery. Perhaps that's to be expected from the massive 42.5Wh battery that rests underneath the new iPad's 9.7-inch display, but we're so accustomed to seeing LTE devour battery life that it's hard not to be taken aback. Best of all, we saw no evidence of dropped or stalled connections. That's not to say there aren't caveats here: LTE reception in our Manhattan office is top notch, and it remains unclear how things would fare in areas with weak signal.

Of course, Apple doesn't advertise its latest gadget as a $629 wireless router, but the idea that you can turn get this kind of sustained operation from the new iPad is reassuring. For those in locations with LTE service, it also makes a compelling case for opting to go with the new iPad on Verizon rather than AT&T, at least until Ma Bell enables the feature for its customers.
http://www.theverge....ur-battery-life

Thanks for the info. I missed that little blurb. I'd love to test this on my S2, but I'd easily blow through my 6Gb data cap.

[Nuke61]

KLanD, on 28 March 2012 - 07:18 AM, said:

Thanks for the info. I missed that little blurb. I'd love to test this on my S2, but I'd easily blow through my 6Gb data cap.

Just by web browsing? It seems like you could turn off scripting, Flash, and 3rd party cookies. That would minimize data transfer while still maintaining the LTE speeds.

[KLanD]

Nuke61, on 28 March 2012 - 07:29 AM, said:

KLanD, on 28 March 2012 - 07:18 AM, said:

Thanks for the info. I missed that little blurb. I'd love to test this on my S2, but I'd easily blow through my 6Gb data cap.

Just by web browsing? It seems like you could turn off scripting, Flash, and 3rd party cookies. That would minimize data transfer while still maintaining the LTE speeds.

Data is data. 21Mb/s x 24hrs of a constant (or almost constant) data stream?

1Mb = ~.125MB

.125MB/s * 21 = 2.625MB/s

2.625MB * 86400s = 226800MB

226800MB / 1024 = ~221.5GB/d

Now, I realize that even when surfing that data usually comes in bursts, unless you are streaming something, but the article does say they "continuously cycled through web content" which to me implies a constant data stream.

[Nuke61]

KLanD, on 28 March 2012 - 08:23 AM, said:

Data is data. 21Mb/s x 24hrs of a constant (or almost constant) data stream?

I don't think they had a continuous data stream, but rather, tried to simulate typical usage. In any case, Anandtech had already tested other LTE devices, including phones, as hotspots. It makes sense that the new iPad would last a really long time compared to other devices since it has a laptop sized battery.

http://images.anandt...h4605/40359.png