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No 3g since flash

I flashed Axura RC 2.5 between Christmas and New Years. Everything seems to be good with the exception of me not being able to pick up 3g coverage in places where I normally would. I have had an H, 90% of the time and its nowhere near as fast as 3g. Should I try a different modem before finding a different ROM?

No h is faster. Can't remember what it stands for but its basically 3.5g more then likely your mind isjust making it seem slower bc you are paying more attention to the speeds. Most of the roms our there don't use 3g they use hsda our whatever it is called
Sent from my SGH-I897 using XDA App

H = HSDPA
AT&T 3G = HSDPA.
It's not faster nor slower. The same thing. AT&T insist on only display 3G on all its phones when you run AT&T stock firmware.
And if you flashed a Euro ROM you may lose 850Mhz 3G support (ask the chief for confirmation of 850 support). AT&T now shifts a lot of 3G towers towards 850Mhz, instead of the old 1900Mhz.
Technically, 3G on GSM world could mean plain UMTS, HSDPA, HSPA+ etc. In the old days, AT&T has a mixture of UMTS and HSDPA depending on which city you were in. Hence the requirement from AT&T to display 3G for all 3G signal types. Nowadays, all its 3G towers has been updated to HSPA+ but Captivate hardware is limited to HSDPA only.

Doesn't ATT still have UMTS? My Perception 10 shows H = HSDPA and 3g = UMTS
yes?

UMTS is what HSDPA built on. AT&T no longer has plain old UMTS. According to its CES 2011 press release, AT&T has finished upgrade 100% of its 3G towers to HSPA+.

Now what about mobile ap, I can connect to my laptop but with limited or no connectivity with full H service? Would that be an issue with the rom? They closed the Axura thread so I cant get all my question answered.

You're right
H = HSPA (HSDPA + HSUPA)
3G = HSDPA

Captivate and 4G

Was reading in another thread (which was closed while I was writing a reply) that some people here might be confused around what 4G is and whether or not their Cappy can be upgraded to it.
First, the simple answer:
Your Cappy cannot be upgraded to 4G. Now or ever. It is possible that it could be upgraded to HSPA+ with the right software. But that is not 4G. 4G is a different radio access protocol running at different frequencies.
The longer answer:
The source of all this confusion is T-Mobile's marketing department who claim their HSPA+ network is 4G. 4G is not HSPA+ or anything like it. It is 3.5G. Much like GPRS and EDGE were 2.5G. LTE (the real 4G) is far superior to HSPA+ for several reasons regardless of the bandwidth claims. Mainly 4G will not suffer nearly as much from congestion like 3G HSPA / HSPA+. It is that same 3G congestion that motivated AT&T to turn off HSUPA on our phones. It's because AT&T's 3G network (UMTS, HSPA, and HSPA+) is already heavily congested in many markets.
Only posting this so people don't think they can get true 4G on their Cappy. It won't happen.

AT&T is also marketing their 4G service as HSPA+, with LTE technology entering their network late 2011.

bptba93 said:
AT&T is also marketing their 4G service as HSPA+, with LTE technology entering their network late 2011.
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Yes, they've started down that path as well. Just don't expect 4G speeds on any of these "4G" devices unless you're the only smartphone user for miles. I truly wonder what AT&T and eventually T-Mobile will call their LTE networks. 4G 2.0?

From AT&T:
Not all 4G networks are created equal. AT&T is the only carrier that will offer two layers of network technology delivering 4G speeds – HSPA+ and LTE.*
Why does that matter?
When combined with enhanced backhaul, our HSPA+ software upgrade is expected to deliver speeds up to 4x faster than ordinary mobile broadband. And we'll be evolving to even higher speeds with the planned initial launch of our LTE network in mid-2011. When you're traveling on our networks, you'll enjoy faster speeds and a smoother, more consistent mobile broadband experience overall.
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So is HSPA+ just a software upgrade with no hardware enhancements in the cellphones or towers?
I do understand the reasoning behind AT&T doing HSPA+ before LTE as it offers reasonably fast speeds in areas where LTE has not matured. If it is indeed only software based, I wouldn't mind seeing an increase from HSPA 7.2Mbps to pseudo "4G" HSPA+ 21Mbps (although these speeds are "up to") on the captivate. Will HSPA+ be up to 21Mbps right out of the gate?
My brother uses epic 4G on Sprint, and in areas of no 4G wimax, his 3G speeds are abysmal... Has sprint stopped upgrading their 3G and is only concentrating on the expansion of 4G?
According to that, AT&T's HSPA+ will end up faster than Sprint's 4G (3-6Mbps on average and up to 10Mbps) unless they pick up the pace.
For LTE (5-12Mbps) according to Verizon.
So is 4G labeling the technology once fully matured (Up to 100Mbps for both LTE and Wimax) or current speed being delivered? Because Sprint and Verizon do advertise their current technologies as being "4G speeds" which AT&T can defeat if their HSPA+ (56Mbps matured) is 21Mbps out of the gate.
The way I see it is that 4G speeds have never existed and should never have been advertised (started by Sprint), but the technology to get there is currently in the building phase.
First post, so I can't back up the speed claims with links directly to Sprint and Verizon 4G speed pages lol
And please correct me if I'm wrong on anything... I'm here to learn.

4G isn't that far away I think AT&T is playing it safe with the 4G in the future thing. I have a couple friends that install att towers and phone lines they have been crazy busy establishing the 4G network in the major cities in know for a fact that most of Dallas and Ft. Worth will be 4G ready this spring as for outlying areas that will take some time. But if you live in a big city area expect your LTE right off the bat
Sent from my SAMSUNG-SGH-I897 using XDA App

LTE is not 4G it still falls under the 3G umbrella along with WIMAX. 4G technologies can do 100M down.

Hydro360 said:
4G isn't that far away I think AT&T is playing it safe with the 4G in the future thing. I have a couple friends that install att towers and phone lines they have been crazy busy establishing the 4G network in the major cities in know for a fact that most of Dallas and Ft. Worth will be 4G ready this spring as for outlying areas that will take some time. But if you live in a big city area expect your LTE right off the bat
Sent from my SAMSUNG-SGH-I897 using XDA App
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It better be here, it's their home

Does anybody else remember this?
http://www.nokiasiemensnetworks.com...works-provides-teliasonera-with-advanced-radi
Just thought this could help a bit.

I just need to clarify one more point in addition to OP's post:
Even though HSPA+ is merely a software upgrade in the carrier side (towers), so far it is not the case with phones. So far there is no phone out there that can be software upgraded to take advantage of HSPA+'s higher speed. T-Mo has to release Galaxy S 4G phone to get 4G support. HSPA+ towers offer backward compatibility with current 3G phones but it doesn't mean you will get higher speed by default (much like 11n routers supports 11G and 11B clients but only 11n client can reach the max bandwidth).
And no, HSDPA + HSUPA does not equal to HSPA+.

groves226 said:
LTE is not 4G it still falls under the 3G umbrella along with WIMAX. 4G technologies can do 100M down.
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Only according to a few people within the ITU. 4G is LTE (and for a few sorry sorry suckers, it is WiMAX). Or at least that is how everyone in the industry sees it (outside of T-Mobile USA and now AT&T and a bunch of confused customers).
As far as speeds are concerned, we should treat Mbps throughput ratings with a grain of salt. Those are ideal world, no contention data rates which when taken out of the lab are purely theoretical. HSPA+ is an upgrade. LTE is a whole new set of radio access, backhaul and core technologies.

My friend has a "4G" LTE phone from Verizon and he got 4 or 5 mbps while I got over 5 on HSPA.

Hspda = HSPA+?

Or is that different?
I am reaching 400kb/s is hspa+ faster?
sent from planet snarf

its pretty much the same thing wtih different speeds. as far as you're concerned, it's the same thing when it comes to what your phone tells you (as long as you're provisioned for 4g with att). chances are the market that you're in (if it's a city or outside a major city) will have 4g (HSPA+), but it may or may not have the backhaul to support higher speeds. backhaul is pretty much just fiber optic cables to the towers in your areas that allow your upload and download rates to get to "4g speeds".
http://en.wikipedia.org/wiki/High_Speed_Packet_Access

3G - UMTS
3.5G - HSDPA/HSDup (sometimes referred to as HSUPA)
4G - HSPA+
3 different networks, providing different speeds. However, I think that even when connected to HSPA+ you will only see download increases, you will still be using HSDup.

will umts show up as H+ still in the upper ICON?

No - UMTS should show 3G. However different ROMs will display different icons when connected to differnet networks. Don't rely on the icon. You can check which network you're connected to by going to settings - about phone - network (or status) and see what network you're actually connected to
Except in stock roms or roms built from the stock rom where the chef hasn't changed the icon. Stock roms will show H+ when connected to umts. Marketing ploy. F you, ATT

homeslice976 said:
3G - UMTS
3.5G - HSDPA/HSDup (sometimes referred to as HSUPA)
4G - HSPA+
3 different networks, providing different speeds. However, I think that even when connected to HSPA+ you will only see download increases, you will still be using HSDup.
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HSPA+ is NOT 4g. LTE is 4g, even though it technically isn't. HSPA+ is jsut a software upgrade to HSPA. the only reason they needed to do the backhaul upgrades were to be able to handle the increased bandwidth.

Does Nexus S support HSPA+?

I recently noticed that my 3G speed is much faster than ever before and I live in one of the city that recently added T-Mobile HSPA+.
I was just wondering if Nexus S supports HSPA+. Thanks!

I believe that the NS (I9020 and I9023 variants) have a max download speed of 7.2Mbps and max upload speed of around 5 Mbps, so it is not HSPA+ capable.

It's true the NS, has a max download speed, of 7.2. However, T-mobile's network (at least where I live, supports 21 mbps theoretical speeds (and will be, updating to 42 mbps soon...woohoo) and I regularly see speeds in excess of 6mbps... Upload speeds of almost 2 mbps (1.75 ) so, technically not HSPA + but, not bad either....
Everytime T-mo updates their network everyone sees a boost. You just won't, ever see speeds above, 7 mbps cuz the phone isn't capable of it.
Sent from my NS running NSCollab cuz I lost my tin cans and string....

HSPA yes. HSPA+ no.
Sent from my Nexus S using XDA App

H+

Im getting very slow speed now. On the gs4 I would get H+ on the nexus I only see H and the speeds on downloads are so slow.
Anyway to fix this?
WCDMA supports H+ for tmobile/gosmart
How can I set the phone to use only that?
Just took 3 mins to download a 11mb app......

omf05 said:
Im getting very slow speed now. On the gs4 I would get H+ on the nexus I only see H and the speeds on downloads are so slow.
Anyway to fix this?
WCDMA supports H+ for tmobile/gosmart
How can I set the phone to use only that?
Just took 3 mins to download a 11mb app......
Click to expand...
Click to collapse
When I got my nexus 5, I was coming from the Nexus 4. I had to call AT&T get 4G enabled. The process of doing so, they had to get my new IMEI code and enable it on their side.
Before that change, I was getting 3 mbs download, now I am getting 25 mb/s.

omf05 said:
Im getting very slow speed now. On the gs4 I would get H+ on the nexus I only see H and the speeds on downloads are so slow. Anyway to fix this? WCDMA supports H+ for tmobile/gosmart How can I set the phone to use only that? Just took 3 mins to download a 11mb app......
Click to expand...
Click to collapse
- Do you have the right APN selected or configured for your client?
- GoSmart I believe throttles to 3G speeds:
$35 plan includes web at 2G speeds. $45 plan starts at 3G and upon 5GB of use in a cycle is reduced to 2Gspeeds for remainder of cycle.
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Click to collapse
- You can go to the phone menu (*#*#4636#*#*) and enable or disable the networks you're using. In your case, you can lose the CDMA network. You can try enabling the LTE network from there, but I suspect GoSmart users are not allowed on that network.

ACCUSED24 said:
When I got my nexus 5, I was coming from the Nexus 4. I had to call AT&T get 4G enabled. The process of doing so, they had to get my new IMEI code and enable it on their side.
Before that change, I was getting 3 mbs download, now I am getting 25 mb/s.
Click to expand...
Click to collapse
Thats really werid because I switch my sim to my Gs4 I get 4g/H+ and I switch it to my iphone 5s and again I get 4g/H+.
On the nexus i only get 3g/H.

Nexus 5 doesn't show H+ it only shows H even if it's on H+ network type

It's just icon. Google Nexus 5 actually doesn't have "H+" icon so it will indicate only "H" every time.
However you can check network type by going to Settings - About phone - Status. If you are on HSPA+ network, you'll see HSPA+.
I have just HSPA at home so can't prove it by proper screenshot.
You can also check network type by installing Netmonitor or Gmon (both available on Play Store).
HSDPA - up to 7,2 Mbit/s
HSPA - up to 14,4 Mbit/s
HSPA+ - up to 21,6 Mbit/s (respectively 43,2 Mbit/s if you carrier supports HSPA+ 42/HSPA+ DC - some American carriers say it's 4G. Actually it's 3.75G but marketing is everywhere.)

MrBelter said:
Nexus 5 doesn't show H+ it only shows H even if it's on H+ network type
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Thanks for clearing that up.

miczk said:
It's just icon. Google Nexus 5 actually doesn't have "H+" icon so it will indicate only "H" every time.
However you can check network type by going to Settings - About phone - Status. If you are on HSPA+ network, you'll see HSPA+.
I have just HSPA at home so can't prove it by proper screenshot.
You can also check network type by installing Netmonitor or Gmon (both available on Play Store).
HSDPA - up to 7,2 Mbit/s
HSPA - up to 14,4 Mbit/s
HSPA+ - up to 21,6 Mbit/s (respectively 43,2 Mbit/s if you carrier supports HSPA+ 42/HSPA+ DC - some American carriers say it's 4G. Actually it's 3.75G but marketing is everywhere.)
Click to expand...
Click to collapse
Thank you for the information. It seems im getting HSPA+ but my speeds are very low when downloading. I downloading the same app on the GS4 and it was done in 13 seconds.

miczk said:
It's just icon. Google Nexus 5 actually doesn't have "H+" icon so it will indicate only "H" every time.
However you can check network type by going to Settings - About phone - Status. If you are on HSPA+ network, you'll see HSPA+.
I have just HSPA at home so can't prove it by proper screenshot.
You can also check network type by installing Netmonitor or Gmon (both available on Play Store).
HSDPA - up to 7,2 Mbit/s
HSPA - up to 14,4 Mbit/s
HSPA+ - up to 21,6 Mbit/s (respectively 43,2 Mbit/s if you carrier supports HSPA+ 42/HSPA+ DC - some American carriers say it's 4G. Actually it's 3.75G but marketing is everywhere.)
Click to expand...
Click to collapse
You got that almost right.
Actually,
HSPA 7.2 Mbit/s
HSPA-DC 14.4 Mbit/s
It is the same dual channel thing as with H+
HSDPA is actually just the Downstream of HSPA. HSPA stands for High Speed Packet Access and consists of HSDPA (High Speed Downlink Packet Access) and HSUPA (High Speed Uplink Packet Access) as its down- and uplink.

I am also having an issue. The network shows HSPA under settings, and I know my plan supports HSPA+. The APNs are the same as they have always been. Any ideas?