Cyber Week Deals: Buy an eligible iPhone & get a FREE AT&T Charger!
What is happening with 3G?
al_g1234's profile

Tutor

 • 

6 Messages

Fri, Apr 24, 2015 8:18 PM

MMS fail to send after Lollipop updates

After my wife's LG G3 got the Lollipop update she started having trouble sending pictures via MMS when at home.  My Samsung Galaxy S5 could still send pictures just fine.  After AT&T sent the Lollipop update for the S5, my phone started having the same problems

 

We've spent numerous hours on the phone with AT&T tech support, swapped the sim card on her phone.  Switched to different APN settings and nothing has worked.  Sometimes the pictures do send out better if we turn WiFi off, but not always.  

 

Due to the poor AT&T signal around our home, we've used a MicroCell for the last 2 years.  It really does appear that the MicroCell and Lollipop are not working right together.  

 

We have a post-paid account with AT&T.

I'm on CenturyLink DSL, my DSL modem is in transparent birdge mode.  I have an EdgeRouter Lite connected to the DSL modem with a Layer 2+ switch on eth1 and to simplify things I've put the MicroCell on eth2 and its own subnet.  I get full bars on both cell phones and have green lights down the front of the modem.  I have done a hard reset, removed the modem from AT&T page and re-added.  I have upnp enabled and am port forwarding UDP 500 and 4500 to the IP that the MicroCell has a DHCP reservation set for.  

 

At this point I'm stumped, but the odd part to me is that Lollipop really seemed to break it. Any one here have any ideas?

 

 

 

OttoPylot

ACE - Expert

 • 

15.9K Messages

7 y ago

Unfortunately, your assumption about Lollipop is probably correct. The SIM swap is one of the troubleshooting methods that is suggested by Samsung. To quote Samsung:

 

After researching a bit, it seems that the root cause is either one of the below:

• New sim card (orange) being used with old microcell

• New microcell, being used with old sim card (blue)

• Basic troubleshooting of network environment (reboot of router, and other environment)

• Basic troubleshooting of device (reboot, sw update, etc)

 

As a side note, the basic router configuration settings are:

 

DHCP enabled

Ports 123 UDP, 443 TCP, 500 UDP, and 4500 UDP must be open (Public and   Private ports). IPSec Pass-Through is enabled

Block Fragmented Packets is disabled

NAT duties handled by only one device if you have a separate router and modem (gateway)

 

This is unfortunately a Lollipop issue that only Samsung is going to be able to fix. There are lots of reports with all kinds of issues so there will be very little that AT&T can do to force Samsung (Android) to fix it quickly.

Tutor

 • 

6 Messages

7 y ago

That is what I was afraid with Lolipop.  

 

Even though my router is configured to automatically open ports through the stateful firewall when a connection is triggered via NAT, I specified the all 4 ports already.  

 

Just out of curisosity, what is a new vs old MicroCell?  We have a white Cisco model DPH153-AT with a date of 12/12.

OttoPylot

ACE - Expert

 • 

15.9K Messages

7 y ago

The new MicroCell model is the DPH-154 and is black, has a smaller footprint, with the Computer Port and the external antenna port removed. Setup, operation, and functionality is the same. It is still a 3G device, for now.

Gweebles

Tutor

 • 

11 Messages

6 y ago

I am having the same issue. I can receive mms fine but it won't send off the mcell.. it is SO annoying!! We have reset the mcell, disabled and reactivated it, played with settings but no fix. And ATT was jerky enough to phase us out of their footprint when they upgraded their towers!
OttoPylot

ACE - Expert

 • 

15.9K Messages

6 y ago

If you are having issues with MMS/SMS after a Lollipop upgrade, it's not the MicroCell, it is a known issue with the Android OS. They are aware of it but have been very reluctant to work with AT&T on a fix. There is nothing that AT&T can do to force Samsung to push a fix.

Gweebles

Tutor

 • 

11 Messages

6 y ago

I just got off a chat session with Samsung where they basically told me "tough luck". I don't want to go back to an IPhone but I may have to.

Contributor

 • 

1 Message

6 y ago

I have similar issue (MMS), but I have LG Nexus 5 unlocked phone running Lollipop.  Apparently I've had the MMS issue for such a long time and I didn't realize that I had it until recently.  I switched the app from Hangout to the "messanger app" and I've been switching back and forth between the apps, but both have similar issue.  

 

So I followed some of the instructions above by turning off the Micro Cell and switching my app to be the Hangout and it seems like everything is working well now.  I've done several tests with my brother and sister phones and everything seems to work.  If I find out any other issues in few days, I'll update this message.  Good luck!

 

 

OttoPylot

ACE - Expert

 • 

15.9K Messages

6 y ago

Thanks for the report. As you can see, working with Samsung has been a frustrating experience. I have since been in contact with a couple of Android programmers and this is basically what they've had to say. I've sort of made this my "canned" response to Android-based issues:

 

 “we have Google/Android to thank for allowing manufacturers to come up with an incredible number of screen sizes, resolutions, and differences in features in Android phones—otherwise known as device fragmentation. It makes testing and optimizing a significantly longer process when you're trying to reach as many people as possible for a single app or mobile site.”

 

The iPhone, on the other hand, is still a tightly locked down system so device fragmentation is almost unheard of. That does not mean that the iPhone OS is better than Android. They both have their pros and cons but there will be compromises the consumer will have to deal with with either system.

 

Hopefully WiFi calling will take care of these issues, provided that the WiFi network  you are on has sufficient bandwidth available. The MicroCell use will diminsh over time but that is predicated on the fact that everyone will have WiFi capable phones.

Need help?
Fix, replace or check device delivery
New to the AT&T Community? Start by visiting the Community How-To.
New to the AT&T Community?
Visit the Community How-To.