HELP - 3G light is flashing, microcell was previously working fine

So you're saying that you had land-based internet before satellite and you were still losing signal at around 2am? Interesting. I found my original User Manual for the DPH-151 model. On page 18 it says, " You need high speed internet service over DSL or Cable (satellite internet service will not work)." This particular unit was purchased in 2010 and still works fine (even though it's been retired and replaced with the new, DPH-154 model).

Glad to know I'm not alone. Started just about a week ago and suddenly I get all the lights except the flashing 3G light. will contact the tech rep in the forum, but would be good if they communicated with customers as soon as they realized there is a wide spread problem. It's been working perfect the 2 years I've had it until a week ago.

There is no widespread problem that I am aware of. Is your 3G light flashing green or red? Give us more details and we'll see what the problem may be.

I'm in the same boat.  My microcell has been rock solid for years.  Last week, the 3G signal bars started flashing green.  I've reset the thing several times with no luck 😞

Flashing green 3G means you have lost connectivity to the AT&T Mobility Servers. Have you, or your ISP, updated any firmware, hardware, etc , and who is your ISP?

Answer ALL the questions the best you can and then we will have a better chance of helping you.

MicroCell™ TroubleShooting Questions:

1. Have you read the Tech Guide first? 1. 3G MicroCell Technical Guide by Otto Pylot

2. Do you have an active postpaid AT&T mobile account?

3. Is your MicroCell white or black?

4. Who is your ISP and is your service ADSL, cable, wireless or satellite?

5. What are your suscribed download and upload speeds as stated by your ISP?

6. Have you tested your internet speeds (http://www.speedtest.net/)? Please run the test and post your latency, download and upload speeds.

7. Have you tested your connection for VoIP quality (http://www.voipqualitytest.com/)? Please run the test and post the results that are listed under the "Advanced" tab.

8. Are you using the basic connection (modem -> router -> MicroCell) or the alternate connection (modem -> MicroCell -> router/computer)? The alternate connection is not possible with the black (DPH-154) MicroCell as it has no Ethernet output but it can be connected directly to the modem to temporarily test the Microcell without the network connected.

9. Are all of the cables firmly in place?

10. Do you have a combined modem/router (gateway) or a separate modem and router? What are the makes and model numbers for your equipment?

11. Have you met the minimum requirements for router settings as outlined in the Tech Guide?

12. What other equipment (access points, switches, computers, WiFi components, gaming consoles, etc.) do you have connected to your network?

13. What does the light pattern look like on the MicroCell (power, ethernet, GPS, and 3G)? Are they all a solid green or is any of them blinking green or red, and if so, which one?

14. Have you done a hard reset of the MicroCell? See the Tech Guide for instructions.

15. Have you deactivated and reactivated your Mcell using AT&T's MicroCell website?

16. Does the ac adapter feel warmer than the top of the MicroCell where the vents are?

Same thing happened to me.

I was able to solve it by placing the MicroCell further away from the Wi-Fi modem.

It turns out that Wi-Fi interferes with the MicroCell and it need to be at least 2' from a Wi-Fi source.  I found this information in the following technical guide -

https://forums.att.com/cng/attachments/cng/3gmicrocell/14725/17/MicroCell%20Technical%20Guide%20v1%208%20(2).pdf

That information is also in the official setup instructions from AT&T for the MicroCell. Even though WiFi and 3G are entirely different frequency bands, if the unit is too close to the WiFi source there may be interference. However, sometimes moving the MicroCell's physical location orients the antenna such that a more stable connection is achieved depending on building materials, etc.

Hello,

My name is Carol

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I was wondering if this issue was ever resolved?  I recently switched to ATT from verizon, but found I typically had very low signal, so I installed a 3g Microcell.  When it works, it is awesome, but it never works for more than 24 hours.

I have deactivated, reactivated, unplugged, reset, replaced, all to no avail.  Talked to many technical support folks too. 

I'm beginning to think it will never work and should give up trying.

Any help would be appreciated,

[Edited for privacy-please do not post personal or unique information such as but not limited to full names, employee ID numbers, email addresses, phone numbers, account numbers, etc.]

Please don't post personal information. That's never a good idea.

Pease answer the following questions:

MicroCell™ TroubleShooting Questions:

1. Have you read the Tech Guide first? 3G MicroCell Technical Guide by Otto Pylot
2. Do you have an active postpaid AT&T mobile account?
3. Is your MicroCell white or black?
4. Who is your ISP and is your service ADSL, cable, wireless or satellite?
5. What are your subscribed download and upload speeds as stated by your ISP?
6. Have you tested your internet speeds? (http://speedtest.net)
7. Please run the test and post your latency, download and upload speeds.
8. Have you tested your connection for VoIP? (http://voiptest.8x8.com)
9. Please run the test and post the results that are listed under the "Advanced" tab.
10. Are you using the basic connection (modem -> router -> MicroCell) or the alternate connection (modem -> MicroCell -> router)? The alternate connection is not possible with the black (DPH-154) MicroCell.
11. Are all of the cables firmly in place?
12. Do you have a combined modem/router (gateway) or a separate modem and router? What are the makes and model numbers for your equipment?
13. Have you met the minimum requirements for router settings as outlined in the Tech Guide?
14. What other equipment (access points, switches, computers, WiFi components, gaming consoles, etc.) do you have connected to your network?
15. What does the light pattern look like on the MicroCell (power, ethernet, GPS, and 3G)? Are they all a solid green or is any of them blinking green or red, and if so, which one?
16. Have you done a hard reset of the MicroCell? See the Tech Guide for instructions.
17. Have you deactivated and reactivated your MicroCell using AT&T's MicroCell website?
18. Test the output voltage of your MicroCell's AC adapter with a voltmeter.  It should read 16 VDC +/- 0.5 VDC. Post your results.

We've seen lots of issues with the Arris modems, especially the ones that come configured for TWC. We try to resolve the issues without having the user swap out and/or purchase new hardware. Most of the time we can but if the problem can't be resolved with the questions above, then trying another router/modem/gateway is the next step. Thanks for the post.

Glad to hear that the hard reset worked. It's not uncommon after an unexpected power outage for something to get scrambled and the only way to clear the registers/memory is to do a hard reset as detailed in my Tech Guide. The hard reset forces the MicroCell back to factory defaults and if nothing was damaged during the power outage, you should be good to go.

Unfortunately AT&T support is not allowed to use my Guide as a support document because it is not an official AT&T document. There are some who do use it on the sly but by and large most of phone support just follows the script and can't, or won't, think out of the box. That's the reason why I put together the Tech Guide.