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3G Microcell - 3G Red Light Flashing

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3G Microcell - 3G Red Light Flashing

My GPS, Ethernet, and power light are on with a solid green. My 3G light is a solid red that flashes every three seconds. I use a Netgear router/modem; honestly, I'm not sure what a modem or router looks like but I plugged the microcell's ethernet into the Netgear. I've tried disconnecting then reactivating the microcell. No luck.

 

Any advice on how to troubleshoot this issue would be awesome. I live in the countryside where cell phone reception is severely limited. Thanks!

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Message 1 of 131

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Community Support

Re: 3G Microcell - 3G Red Light Flashing

Hello Community!

 

One of the most common topics we see on the forums is regarding the Microcell.  Specifically, how to identify and understand the differences between the LED light indicators on the device as well as troubleshooting steps to resolve any issues.

 

The information contained below is a combination of the great community content, as well as information provided by our Advanced Technical Support team that supports the Microcell every day.

 

MicroCell LED Guide

 

Power LED

  • Off– No power to MicroCell.
  • Solid Green– Microcell has power.
  • Solid Red– MicroCell is either still powering up or is in an error state. Please unplug the MicroCell from power and plug it back in. If the LED remains red, please try an alternate power outlet or alternate power cable. You can also test the ac adapter with a voltmeter. It should read 16VDC ± 0.5. If not, replace the adapter with one of the exact same power rating.

 

Ethernet LED

  • Off– No Ethernet cable connected. Please make sure both sides of the Ethernet cable are firmly attached. One side should be plugged into the Ethernet port on the MicroCell and one side should be plugged into an Ethernet port on the modem or router. Ethernet cables should click when inserted into an Ethernet port. If the LED does not light when both sides are firmly attached, please try an alternate Ethernet cable. The MicroCell has been tested and works with Ethernet cables up to 15 feet long.
  • Solid Green– The Ethernet cable is connected and the MicroCell has been assigned a valid IP address.
  • Flashing Green– The Ethernet cable is connected but the MicroCell has not been assigned a valid IP address. Please power cycle the modem, then router, then MicroCell in that order. If the Ethernet LED continues to flash, please ensure DHCP is enabled on the modem or router. The MicroCell requires DHCP to work.

 

GPS LED

  • Off– No location check is being performed at this time. The MicroCell is either unplugged or is going through activation.
  • Flashing Green– The MicroCell is performing a location check. It is scanning both for GPS satellites and for local cell sites.
  • Solid Green– The MicroCell has completed the location check.

 

Computer LED (only on white model MicroCells)

  • Off– Nothing is plugged into the computer port.
  • Flashing Green– Traffic is passing through the MicroCell.
  • Solid Green– No traffic is passing through the MicroCell.
  • If continued issues occur, it is recommended to not use the Computer Port because of potential issues with the connected computer’s internet settings.

 

Network or 3G LED

  • Off– The MicroCell is not activated. It is either powered off or going through activation.
  • Flashing Green– The MicroCell is not activated. It is going through activation or is experiencing a connectivity issue. Please wait 90 minutes after registration. If the 3G LED continues to flash after 90 minutes, please review the Firewall &Router settings and make sure the modem or router are appropriately configured for use with a MicroCell.
  • Flashing Red– The MicroCell has failed the location check. Please ensure the MicroCell is registered to the correct address. Please power cycle the MicroCell to trigger a new location check. It may also help to relocate the MicroCell to a location with a clear view of the sky. If the MicroCell fails the second location check, please contact AT&T Customer Care.
  • Solid Green– The MicroCell is fully activated and is broadcasting signal.

 

We also have comprehensive Video content to help you navigate any issues you might be having:

 

Note: A failing AC adapter can affect any of the LED lights so it’s always a good idea to check the adapter with a voltmeter, especially if the MicroCell is a few years old or you have experienced numerous or unexpected power outages.

 

You can also find a full list of Microcell support by visiting our Microcell support site

 

Thanks again for all your fantastic questions and support, and please comment below if there is anything we’ve missed!

 

Katie, Community Specialist

Employee Contributor*
*I am an AT&T employee and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.
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Message 119 of 131

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Teacher

Re: 3G Microcell - 3G Red Light Flashing

It states right in the user guide a red flashing 3G light may be a device issue. Sounds like it is broken.
Message 2 of 131
Employee

Re: 3G Microcell - 3G Red Light Flashing

There is a"unknown"issue causing this.not sure why yet as a lot odd people had this happen last week
Employee Contributor*
*I am an AT&T employee and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.
Message 3 of 131
ACE - Master

Re: 3G Microcell - 3G Red Light Flashing


Kimen wrote:
It states right in the user guide a red flashing 3G light may be a device issue. Sounds like it is broken.

Not necessarily. If AT&T updates the MicroCell (and this is usually done in the middle of the night without advanced notice or reason), and there is a problem re-connecting, the 3G light will start blinking red because the update either failed or the MicroCell thinks it has because of no connection. That happened to me a couple of weeks ago and a quick power cycle of my modem/router/ MicroCell resolved the blinking red light and I was back up and running in under 10 minutes.

___________________________________________________________

MicroCell Technical Guide by Otto Pylot

"Quick Tips: My Microcell Doesn't Work"


I am not an AT&T employee. For additional help, please send a PM to ATTMobilityCare

*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.
Message 4 of 131
Contributor

Re: 3G Microcell - 3G Red Light Flashing

My GPS light has been blinking red for several days now. Yet the Microcell seems to be working fine. Do I need to do anything to get the light solid green as it should be or should I not bother myself since the phone seems to be connecting to the Microcell?

Message 5 of 131
Contributor

Re: 3G Microcell - 3G Red Light Flashing

my microcell is a solid red and I don't remember it being that way
Message 6 of 131
Highlighted
ACE - Master

Re: 3G Microcell - 3G Red Light Flashing


damomics wrote:
my microcell is a solid red and I don't remember it being that way

AT&T probably attempted an update (usually done in the middle of the night) that either didn't go well or after the update the MicroCell didn't properly reset itself so it thinks the update failed. Power cycle and see if that corrects it. When my 3G started blinking red I just power cycled everything and was back up and running with solid green all the way down in about 10 minutes. What was odd though is that even with a red blinking 3G light, I still had a solid connection.

___________________________________________________________

MicroCell Technical Guide by Otto Pylot

"Quick Tips: My Microcell Doesn't Work"


I am not an AT&T employee. For additional help, please send a PM to ATTMobilityCare

*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.
Message 7 of 131
Contributor

Re: 3G Microcell - 3G Red Light Flashing

Same issue here.  The microcell worked fine for well over a year and then suddenly I started getting the red blinking 3G light a few weeks ago, right around the time others started reporting the same issue.  Seems pretty obvious that AT&T pushed some kind of software update to the microcell that didn't go very well.  Hopefully they'll figure it out and push another update to correct it.

Message 8 of 131
Contributor

Re: 3G Microcell - 3G Red Light Flashing

I power cycled down and restarted and also was able to get a green light again. However within an hour or so it goes red again. I thought it might be my wireless router so I bought a new one and that did not make a difference. Everything on my phones and Micro Cell indicate that I should not be able to make a phone call yet we are able to do so. We will let the light blink red and just keep using the phones I guess.

Message 9 of 131
Contributor

Re: 3G Microcell - 3G Red Light Flashing

I am having the same issue.

 

I wake up, red flashing light, I power cycle everything, get a green light, and within hours right back to flashing red.

 

Anyone know anything new or further about this issue?

 

Thanks in advance

Message 10 of 131
ACE - Master

Re: 3G Microcell - 3G Red Light Flashing

If you've power cycled and let it sit unpowered for about 5 minutes and still can't get a solid green 3G, then the update is causing the MicroCell to think there's a hardware failure because it can't reset itself. There is a reset button just above the power cord connector on the back. Try pressing that for about 30 seconds or whatever the instructions say to reset it.
___________________________________________________________

MicroCell Technical Guide by Otto Pylot

"Quick Tips: My Microcell Doesn't Work"


I am not an AT&T employee. For additional help, please send a PM to ATTMobilityCare

*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.
Message 11 of 131

Re: 3G Microcell - 3G Red Light Flashing

Does anyone consider this to be a long term solution?  Yes, resetting the Microcell fixes the blinking red 3G led, for some time but it is not a lasting fix.  I have to reset my device nearly every day.  Today, I have reset it twice.  Is there no better fix than this?

 

I am disturbed that AT&T is not supporting this product  better than this.

Message 12 of 131
ACE - Master

Re: 3G Microcell - 3G Red Light Flashing

No. I don't think that resetting everyday is considered a long term solution but it may be the only workaround for some. If you haven't done so already I'd check your setup, ISP, etc. You may just have a defective MicroCell that just can't properly reset itself either after an update by AT&T or something that your ISP has done. If you're still under warranty, document your issues with support and then get approval to go down to your local corporate AT&T store and get a replacement. The support, or total lack of by AT&T, has been an ongoing issue since they were first introduced. [Per Guidelines:  Keep it Relevant and Appropriate].

___________________________________________________________

MicroCell Technical Guide by Otto Pylot

"Quick Tips: My Microcell Doesn't Work"


I am not an AT&T employee. For additional help, please send a PM to ATTMobilityCare

*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.
Message 13 of 131

Re: 3G Microcell - 3G Red Light Flashing

I also have had the flashing 3g light problem for a while and I MAY have come up with some kind of fix but need someone to help me test it. 

 

So, if your microcell is flahing a red 3g light, please try the following and let me know what happens.

 

1) With the microcell flashing red, unplug the ethernet cable while leaving power plugged in.

2) Wait 2 mnutes, unplug power cable.(whileethernet is unplugged).

3) Wait 30 seconds, plug power cable in with ethernet cable unplugged.

4) Wait 2 minutes, plug in ethernet cable. (while microcell is powered on)

5) Wait 2 minutes, unplug power cable (leaving ethernet plugged in).

6) Wait 30 seconds, plug in power cable. (with ethernet cable plugged in).

 

This should clear the red 3g light.  If it does not, try power cycling again (unplug power, wait 30 seconds and plug back in).

 

If anyone is dealing with the red 3g light issue and can try this, please report back and let us know if it works or not.  AT&T support is clueless on this issue, but maybe we can help each other find a solution.

 

Thanks for everyone's help in testing this.

 

[Edited to comply with Guidelines]

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Message 14 of 131
Contributor

Re: 3G Microcell - 3G Red Light Flashing

We have 2 microcell's in 2 different houses in different cities, and within days both have switched from green 3G to red.  Just Still  have microcell service.  Can't figure it out and seems nobody knows why either.  Can't believe 2 would become defective at same time. 

Message 15 of 131
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