The Ultimate AT&T Mobley Unlimited Data Plan Guide
The "Mobley Plan" is the colloquial name for the sweet $20/month Unlimited Data Connected Car plan from AT&T paired with a Mobley 4G connected car device. It offered a very flexible, affordable plan for unlimited data.
Unfortunately the AT&T "Mobley Plan" unlimited data plan is no longer available, but existing customers are grandfathered in.
The Mobley device (when it was still in stock) combined with the $20/month unlimited Connected Car data plan created a powerful and inexpensive mobile internet solution that most people simply call the "Mobley Plan."
This device & plan combo was the big news of 2017 as it offered a super cheap way to obtain unlimited mobile AT&T data suitable as a home internet replacement for many RVers and cruisers.
And it was also available as a stand-alone option, so there was no need to carry a smartphone or other device on an AT&T account. Basically, you could just have the Mobley on the $20/month (plus taxes and fees) connected car line with no other obligations.
It was a sweet deal, and those who snagged it before it retired have continued to enjoy unlimited data for a ridiculously low price.
The "Mobley Plan" has been available on two separate occasions - once in 2017, and then again for a short period in early 2019.
Presently, the Mobley is no longer in stock at AT&T and is considered an obsolete, legacy device. Those who took advantage of obtaining the device and plan when it was available are grandfathered in.
AT&T offers a different Connected Car Unlimited plan, but it is now restricted to vehicles with embedded cellular systems and it can not be used as a simple home-internet replacement for RV or boat travels.
This guide is kept up to date for our members who still have this sweet legacy unlimited data Mobley Plan from AT&T, with care and feeding tips to keep it active.
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Care and Feeding of the Mobley Plan
Since 2017 when the AT&T Mobley unlimited data plan came out, there has been a lot of information discovered and shared for successfully using the Mobley Plan as a home internet replacement. We have a section that focuses on some of the advice we've collected.
Bypassing the SIM Lock Using PUK Codes
The same firmware update that caused Mobley timeout issues also automatically set a SIM lock PIN code. AT&T Mobley owners have reported "SIM PIN Locked" alerts when they have tried to use a Mobley Connected Car SIM card in other devices.
Using Mobley Plan in Other Device Types
This section covers the details and risks of situations where you might want to use this unlimited data plan in a device other than the Mobley that is not officially authorized by AT&T.
Summary: The Mobley - A Unicorn of a Connected Car Plan
The "Mobley Plan" is a unicorn amongst a field of raggedy bay ponies in the world of mobile internet.
For those who jumped on purchasing this option while it was available in 2017, or again in 2019 - the Mobley Plan provides truly unlimited AT&T based data, hindered only by network management at 22GB and roaming restrictions.
While the Mobley device itself - which the $20 Connected Car Unlimited plan is paired with - is pretty limited in its function, enterprising nomads have figured out ways to make it work for their needs, or circumvented the limitations by using the plan in a better device.
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