moeSizlak

Others have complained about this, and said it's worse when the display is set to dim. I haven't noticed. A reliable source on XDA is saying "thats not true...the back of the box lists the supported bands, which includes GSM". I don't have the box with me to check right now,

I'm curious about the alleged lack of GSM and WCDMA. I travel in Canada a lot and this would really suck if true.

Going to pick mine up in an hour.

This article claims the wifi antenna has major issues & suffers from "grip of death": http://www.androidpolice.com/2016/04/19/htc-10-review-a-very-good-phone-but-one-that-costs-too-much-money/

Thank you for the information. I did indeed read that post while I was researching this problem. So does this mean the m9 is completely unable to roam in Canada, period? I was able to swicth to GSM-only mode and get a strong Rogers signal. However attempting to make any call resulted in the call immediately dropping. I also had Sprint international "enable" my phone for roaming and they were the ones that advised trying GSM mode.

"the One M9 was not tested, thus is not authorized for domestic GSM/W-CDMA bands. Rabid phone unlockers under the new Sprint domestic unlocking policy, consider yourselves forewarned." Could this be why my m9 does not work in canada?

The M9 is the first HTC phone I have ever owned that does not work in Canada, at all. The evo, evo 3d, m7, and m8 all worked flawlessly in canada. The m9 gets no signal. I called support and they also sent me to international support, and neither was able to get it working. Obviously roaming is enabled, as well as international voice. Still no signal whatsoever. I then went into *#*#4636#*#* menu and tried changing the preferred network type to every possible option. On the GSM options, the phone would actually get a signal, but whenever you attempt to make a call it just drops immediately.

I'm using the Sprint HTC m9 with (.30 OTA). At home in Hamburg, NY I have no issues. At work, on east side of Buffalo, NY, near intersection of E Delevan and Grider I get repeated and non-stop "Failed to initialize wireless data connection: EHRPD" followed by an error number which varies but in the last 10 minutes I've gotten -3, 65540, and 65535. I didn't really have this issue with my HTC m8. My m8 usually parked on a weak LTE signal and stayed there, my M9 is rarely on LTE. So either network issues started around same time as a switched to m9, or the m9's radio is faulty. Any ideas?

Actually, it looks as if the tower is now broadcasting on LTE band 41. SignalCheck LITE reports: UL Channel: 58978 DL Channel: 40978 Normally, when I'm on band 25, the app will also report the frequencies (ie, 1912.5 MHz). But for some reason the app doesn't know what frequency these 2 channels are. However I was able to find one website that claims that channel 40978 is band 41, 2628.8 MHz. This means that Sprint is upgrading towers in Buffalo to use band 41. This is cool because we're not getting any band 26 (800 MHz) action in Buffalo due our proximity to the worthless country of Canada. However, I was literally about 1000 feet, line of sight, to the tower and was getting an extremely weak signal: RSRP: -105 dBm (18 asu) RSRQ: -8 dB, SNR: 18.6 dB, CQI: 1 Is this normal for band 41?

Thankfully, the tower came back online yesterday.

Very frustrating problem at my house in Orchard Park, NY. I used to get a very good LTE signal from the tower located behind the firehall near 3426 Abbott Rd, Orchard Park, NY 14127 (near corner of Rt 179 and Abbott). However for the last week (maybe more) that tower has not been broadcasting. My phone now uses the tower near Ralph Wilson Stadium instead...which does not have LTE, and the 3G signal I get from it is so weak I often miss calls... -100 dBm to -110 dBm Would complaining to Sprint do any good here?

The new radio firmware that came with the 1.54 update completely fixed this issue for me.

The new radio firmware that came with the 1.54 update completely fixed this for me.

I don't believe there is any SIM in the phone. SIM's are for GSM. I stand corrected, it does use one for LTE.

Sadly, that is not 100% true. This article explains the problem: http://www.zdnet.com/blog/apple/ipads-go-black-in-portrait-mode-with-polarized-sunglasses/12706 They could have used any of these solutions to allow the phone to look good in portrait OR landscape mode: Using polarized sunglasses all iPads go black in Portrait mode. Other displays go black in Landscape mode. Much better is for the manufacturer to set the extinction at 45 degrees so the display looks good in both Portrait and Landscape modes. The Motorola Xoom behaves this way. Best of all, with compensating films this effect can go away almost entirely. I kind of feel like they went cheap on this option.

Wow. You are absolutely correct. When orientated in landscape mode the screen looks perfect with polarized shades. When in portrait, it's barely visible.

How do you put it into LTE Only mode? I do not see any such option.

I've been using my M8 for about 3 days now and here are my impressions: * Build quality is awesome, much better than M7 * RF performance is better than M7 * I do not like M8's button placement. I find it hard to turn the phone on or off without inadvertently pressing one of the volume buttons. * I greatly prefer M7's recessed volume rocker to M8's non-recessed rocker. * Very slippery, definitely need a case. * For some reason the M8's screen is almost impossible to see when wearing polarized sunglasses. The M7 did not have this problem at all. * My biggest complaint is the single radio path and the fact that the phone often does not connect to LTE even when there is a STRONG signal. I've been told this is a tower/eCSFB issue not a phone issue. I have a very strong LTE signal at both my home and my work, and most points in between. All towers at home, work, and in between are at least 3G accepted. Upon booting the phone, it will happily connect to LTE and stay connected. If I drive for a while, to home or to work, it will switch to 3G and *never* switch back, ever. Even if I drive back to where I started from (where I had a strong and consistent LTE connection). The only way the phone will EVER connect to LTE again is if I either reboot it, or toggle airplane mode on and off. That is very annoying. However I do know that the LTE buildout in Buffalo is still underway. All in all, I still highly recommend this phone, but be aware that by using it on Sprint you are essentially an early adopter of this triband, single radio path, eCSFB system and are pretty much a guinea pig.

Interesting, thanks for the info. Here's what I'm seeing with my HTC One M8 in Buffalo, NY: I have a very strong LTE signal at both my home and my work, and most points in between. All towers at home, work, and in between are at least 3G accepted. Upon booting the phone, it will happily connect to LTE and stay connected. If I drive for a while, to home or to work, it will switch to 3G and *never* switch back, ever. Even if I drive back to where I started from (where I had a strong and consistent LTE connection). The only way the phone will EVER connect to LTE again is if I either reboot it, or toggle airplane mode on and off. I am very frustrated and don't know if it is the phone, or an eCSFB issue, or what...

Well first of all, it does not "periodically check" for calls and texts. That makes it sound like your device is polling for calls. That would be ridiculously stupid. Instead CSFB tells the device, via LTE, to switch itself to CDMA/1X to receive a call. Texts are received over LTE without switching to CDMA/1X (To prove this just try sending or receiving SMS or MMS while on a call. It works fine.)

No, you can send receive SMS/MMS over LTE, as the article states: http://s4gru.com/index.php?/blog/1/entry-357-nexus-5-and-lg-g2-experience-temporary-sprint-lte-connectivity-issues-due-to-circuit-switched-fallback-technology/ EDIT: Since the initial publishing of this article, it was discovered that Triband LTE devices were capable of sending/receiving texts via LTE. It is only voice calls that require Triband LTE devices to shunt back to the CDMA network via CSFB. The article has been edited to make this clarification.

Just obtained an HTC M8 (One) with tri-band LTE and I'm curious if I'll be impacted by any CSFB issues in Buffalo,NY. Looking at the maps, the vast majority of all sites in my area are 3G accepted, with about 60-70% being 3G/4G accepted. So I'm assuming that I should be OK. One question: When you're in an area with an LTE signal and operational CSFB, but you are on wifi, does the phone maintain a connection to EVDO/1x to listen for calls, or to the LTE? (In other words, does being connected to wifi preclude you from LTE/CSFB-related issues with call receiving?) Thanks. This site rocks.

CSFB doesn't effect texts as those are transmitted over LTE.