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LG LS740: Could it be a midrange RF powerhouse?

MacinJosh

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by Josh McDaniel

Sprint 4G Rollout Updates

Friday, January 31, 2014

 

This year is shaping up to be an interesting one for Sprint handsets. In 2012, 15 LTE devices were released on the then brand new Sprint LTE 1900 network, while last year saw a 100 percent increase to 30 devices. And this year could be just as big of a year as last. So, what better way to start 2014 off right than with a tri-band LTE phone?

 

We present S4GRU's first FCC OET authorization article of 2014, the LG LS740, a midrange LG tri-band LTE handset not yet announced but presumably headed to Sprint. RF stats are pretty high for a midrange device, as you can see below.

  • CDMA1X + EV-DO band classes 0, 1, 10 (i.e. CDMA1X + EV-DO 850/1900/800)
  • LTE bands 25, 26, 41 (i.e. LTE 1900/800, TD-LTE 2600)
  • band 25 LTE 3/5/10 MHz FDD carrier bandwidth
  • band 26 LTE 1.4/3/5/10 MHz FDD carrier bandwidth
  • band 41 LTE 10/15/20 MHz TDD carrier bandwidth
  • LTE UE category 4
  • 802.11 b/g/n Wi-Fi
  • 802.11n MCS index 7 (single spatial stream, 20 MHz carrier bandwidth, 400 ns guard interval)
  • SVDO and SVLTE support absent
  • RF ERP/EIRP maximum: 22.121 dBm (CDMA1X 800), 21.081-22.621 dBm (CDMA1X/EV-DO 850), 23.14 dBm (CDMA1X/EV-DO 1900), 25.06-26.82 dBm (LTE 1900), 22.901-25.211 dBm (LTE 800), 24.9-26.29 dBm (TD-LTE 2600)
  • NFC
  • Antenna locations: notably absent from this article as LG has an on again/off again attitude about when it releases antenna diagrams
  • Simultaneous transmission paths: (see FCC OET diagram below)

LGLS740%20Simultaneous.jpg

 

fcc%20label%20lg%20ls740.jpg

 

According to the FCC OET docs and Sprint UA profile, system specs for this device are as follows:

  • Qualcomm MSM8926 (aka Snapdragon 400)
  • 4.7 in screen
  • 540 x 960 screen resolution
  • Android 4.4 KitKat
  • Bluetooth 4.0
  • 2 GB RAM
  • 32 GB ROM
  • microSD slot absent
  • 1.3 MP front camera
  • 8 MP rear camera with full HD (1920 x 1080) video recording
  • sealed battery

Expect this device to have a mid to late spring release, and it might be the replacement to the LG F3 (LS720) Sprint released last year.

 

Source: FCC OET, Sprint UA Profile

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It's a bummer it doesn't support AC WiFi.  Everything should anymore, IMHO.

 

Robert

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It's a bummer it doesn't support AC WiFi.  Everything should anymore, IMHO.

 

Robert

 

Agreed. But I think that for the first half of this year, it'll be flagships that will have AC Wifi, mid-ranges should follow by the end of the year.

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Guest mreed112

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Since I got my G2 for FREE, how much less will a "mid-range" device be?

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I'm curious about the WiFi (VoIP) listed there in the table. Likely it supports the WiFi calling Sprint has recently started supporting on a few devices enabled via Sprint.com?

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Since I got my G2 for FREE, how much less will a "mid-range" device be?

 

Based on the fact that 2yr subsidy pricing is going away, I don't know if it'll be released before the end of 2 yr pricing. But my guess is it'll have an MSRP of between 399.99 and 499.99.

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I'm curious about the WiFi (VoIP) listed there in the table. Likely it supports the WiFi calling Sprint has recently started supporting on a few devices enabled via Sprint.com?

 

I wondered about that myself, but not 100% sure, although it'd be nice.

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Based on the fact that 2yr subsidy pricing is going away, I don't know if it'll be released before the end of 2 yr pricing. But my guess is it'll have an MSRP of between 399.99 and 499.99.

What do you mean 2yr subsidy pricing is going away? Is this confirmed, or a thoery based on the market trend (T-Mobile, etc.)

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What do you mean 2yr subsidy pricing is going away? Is this confirmed, or a thoery based on the market trend (T-Mobile, etc.)

 

Sprint employees have said in our Forums that Sprint is doing away with subsidized pricing and contracts soon.  Rumored to be Mid March.  You will soon be paying for your devices at purchases, whether 100% or through financing.

 

Robert

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Guest mreed112

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So when my 2yr contract expires on Cyber Monday in 2015, can I assume that my Monthly Recurring Charge will go down by $20 per month since I am no longer subsidizing a new device?  I find it hard to believe that this change will happen until the entire industry goes along.  Even if it does happen, competitive pressies will still force special deals.

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Sprint employees have said in our Forums that Sprint is doing away with subsidized pricing and contracts soon.  Rumored to be Mid March.  You will soon be paying for your devices at purchases, whether 100% or through financing.

 

Robert

So is it speculated that Sprint will be cutting monthly rates in half? 

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So is it speculated that Sprint will be cutting monthly rates in half?

 

No, in order to lower your bill, you will have to move to a Framily plan. And then either pay full price for your phone, or finance on EasyPay.

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Dislike the low resolution and single cellular radio path.

 

Unfortunately the single cell radio path is the way Sprint Tri-band is going. Not much we can do to change Sprint's mind. I'm glad that this has increased battery life for Spark capable phones.

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Dislike the low resolution and single cellular radio path.

 

For screen resolution, you will have plenty of better options. For RF transmit path, you will not. So, get used to it.

 

AJ

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I'm curious about the WiFi (VoIP) listed there in the table. Likely it supports the WiFi calling Sprint has recently started supporting on a few devices enabled via Sprint.com?

 

I hope so. I was also curious about the note on the bottom about LTE supporting VoIP. Has that appeared before for other phones? It could be a subtle way of saying the handset is VoLTE-ready. Since it's a given that any data connection will carry VoIP traffic (with varying quality), why else would they mention that? 

 

It would be surprising for a mid-range device such as this to be the first, but Sprint will likely want to soon start certifying devices for VoLTE, even if they don't plan to deploy it for a couple years, just as they did for CDMA BC 10 and 1x Advanced. I doubt older LTE devices can be upgraded to support it without re-certification.

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Unfortunately the single cell radio path is the way Sprint Tri-band is going. Not much we can do to change Sprint's mind. I'm glad that this has increased battery life for Spark capable phones.

Being that their end game is VoLTE and it won't really matter that it's a single cell path. 

 

With Sprint starting to support WiFi calling I'd really like to see support for multipath TCP to allow handoff from WiFi to Cellular. 

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Being that their end game is VoLTE and it won't really matter that it's a single cell path. 

 

With Sprint starting to support WiFi calling I'd really like to see support for multipath TCP to allow handoff from WiFi to Cellular. 

 

I'm not familiar with multipath TCP. I'll have to research that one out.

 

I am familiar with the concept. Didn't know it's name until you mentioned it. Apple implemented it with the release of iOS7. I wondered why my connection didn't drop as hard when going from wifi to cellular data recently.

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Wouldn't "WiFi(VOIP)" hint at this device's use on Republic Wireless. And Im not sure what is so special about this functionality when apps like GrooveIP already exist

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Wouldn't "WiFi(VOIP)" hint at this device's use on Republic Wireless. And Im not sure what is so special about this functionality when apps like GrooveIP already exist

 

Republic could benefit with this phone because of the WiFi VOIP capability. And who wants GrooveIP when you can have an all-in-one solution from Sprint?

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