AT&T 3G MicroCell Review and Recommendations

The MicroCell is an interesting product. Some believe it is a product filling holes in a carrier’s network that shouldn’t exist. No carrier has blanket coverage and often even when there is coverage, it is worse indoors so it is nice that products like this do exist.  For $150, you can pick up an AT&T MicroCell from any AT&T store.  This is a cheaper option than some alternatives and worth consideration if you have little coverage at home or work.


Account setup is rather simple and done through a website.  You provide your address and phone numbers and that’s it.  You are limited to 10 phone numbers that can work through a MicroCell.  The good news is that it is locked down by phone numbers so your neighbor can’t use it.  Your address info is verified by GPS in the MicroCell during startup.  Unfortunately, this means the device needs to be near a window so it can get a GPS signal.  This is the oddest thing about it but apparently a requirement by the FCC.  If the GPS light does not come on, you need to move it closer to a window.  In some cases, you may need to try various windows at your house until you finally are able to get GPS.

Once you get GPS and are connected to your Internet, you can move the device as long as it doesn’t lose power.  This might be easy if are just relocating it in the same room.  If you are moving to an area with no windows, you’ll need a battery backup solution.  A cheap good option is the Tripp Lite Compact UPS.  Once you get GPS by a window, you can unhook the ethernet and move the MicroCell and UPS (uninterrupted power supply) wherever you like.  Of course, if you ever lose power for longer than your UPS can last, you’ll have to go through that whole process again to set it up.  This battery backup approach can make sense though because placement is very important.


AT&T claims a 40 ft range.  This is pretty decent and works out to an area of about 5,000 square feet, even more if you have 2 floors.  You’ll drop about 1 bar of coverage per major obstacle (like a wall) so to cover a whole house, you’ll want to put the MicroCell in the most central location.  Unfortunately, central often means no windows, hence the need for the UPS approach.

Even if you’ve got 5 bars and are sitting right next to the MicroCell, your call quality might be awful if your Internet isn’t good.  This is often the cause of any VoIP (voice over Internet protocol) issues and everyone’s assumption that their Internet is good.  To test the VoIP quality of your Internet, visit this VoIP test site.  If you don’t do well on those tests, you shouldn’t consider any VoIP products.

Assuming you’ve got good Internet and good bars, the MicroCell performance is very good.  You’ll know you’re connected because your phone will say something like AT&T M-Cell instead of just AT&T.  If you’re far from the MicroCell or have many walls between it and you, your performance may suffer so be sure to place it near where you expect to make most calls.  If you’re heavily using your Internet, streaming a video for example, your call quality may suffer if you don’t have your router setup properly.

Router Optimization

The MicroCell can go between your router and DSL/Cable modem but additional routers is rarely a good thing.  We recommend you hook the MicroCell up to your router so it can plug in anywhere on your network. We don’t recommend the use of a wireless bridge as wireless can be too sporadic for VoIP.  To optimize MicroCell performance, it should be given high priority in your router’s QoS (Quality of Service).  The MicroCell MAC address is on the bottom of the device.


Before the MicroCell, the best alternative was the zBoost YX-510 Cell Phone Booster.  This is around $300 and requires that you have some signal near a window or in an attic.  Coaxial cable is run from an antenna to the zBoost repeating antenna.


If you’ve got poor Internet but some outside signal, the cell phone booster is your best bet.  If you’ve got good enough Internet, the MicroCell is a cheaper and superior option.  You may not like having to pay for such a device but it is a one time fee that should simply make your AT&T phones work at home.

5 Replies to “AT&T 3G MicroCell Review and Recommendations”

  1. I do not recommend the 3G microcell.
    – voice quality is intermittently unintelligible for the subscriber. The other party sometimes hears echo
    – it adds about 70 ms of latency to the voice to the point that it makes it difficult to have a conversation.
    – there is no screen to tell you the firmware version or any service statistics
    – tech support told me to return mine because they could not fix my service and did not know when they could roll out a firmware upgrade to fix it. There are messages on the boards saying there is a firmware update to fix this problem.

  2. I have a 3GS myself and I used to have MAJOR issues with others hearing me. The best way to describe it was that others stated that my voice got distant and low and then came back clear so my conversation was choppy on there end despite me hearing them fine on my M-Cell connection. After some troubleshooting I found 2 things that impact call quality on M-Cell.

    1. Location Services – you need to turn this service completely off.

    2. Wi-Fi – yep, that wireless connection will impact your call due to using then same connection redundantly by your iPhone via M-Cell & Wireless.

    Switch both of these services off, and provided your Quality of Service is 0.0%, you’ll be fine.

  3. Works fine for me. It found GPS signal for setup and it wasn’t even near a window, it was about 15 feet away. Voice quality was fine.

  4. Thank you Kevin for the tips. I am going to give them a try. My Quality before the MCELL was TERRIBLE, but now with it no one can hear me if I am in the same room with the tower. I am going to try the Location and WIFI settings and see if it improves.


  5. I returned the Microcell yesterday for a refund. After initial setup, it worked for about 30 minutes and then stopped. My activation screen said there was an address conflict. Evidently the GPS location was telling ATT that the address was wrong. After about 15 attempts and contacting tech support umpteen times, a supervisor came on the phone and said that I was using a fraudulent address and that I should return the microcell for a refund. I was using my 911 address and was not trying to pull a fast one on anybody. We live in an area where at best, I can get one, maybe two bars if I go to a certain place in the house and hold the phone over my head near a transom window. So needless to say, I was not impressed at all with ATT customer service or the Microcell.

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