I cant afford $500 for a new one so thought maybe I could get a used one cheaper.

Does anyone know what model iPad mini is the minimum for this purpose?

2 but 4 is best.

I use the iPad mini 2. I have not had a single problem. But the four would be better.

This is the official list of IOS devices that are compatible with DJI GO4 app taken from the DJI website: -

APP / LIVE VIEW

iOS Version v4.2.5.
Requires iOS 9.0 or later.
Compatible with
iPhone 5s, iPhone SE, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone 7, iPhone 7 Plus, iPad Air, iPad Air Wi-Fi + Cellular, iPad mini 2, iPad mini 2 Wi-Fi + Cellular, iPad Air 2, iPad Air 2 Wi-Fi + Cellular, iPad mini 3, iPad mini 3 Wi-Fi + Cellular, iPad mini 4 and iPad mini 4 Wi-Fi + Cellular, iPod touch (6th generation). This app is optimized for iPhone 7, iPhone 7 Plus.

Thank You all if the 2 works fine that's good news.

I have a large iPhone and the RE Goggs are on the way but switching from Goggs to a tablet can be handy sometimes for functions that cannot be selected in the RE Touchpad.

It's important because all Apple products cost 30-40% more in Australia than in the USA.

Why do Apple gouge us this way? Because they can.

A CW Posted at 2018-2-5 10:47
This is the official list of IOS devices that are compatible with DJI GO4 app taken from the DJI website: -

APP / LIVE VIEW

Tanx, I had not found that info.

I have a dedicated Mini 4 iPad, 128GB that has never failed me. Perfect fit for the controller.

fansf77370fb Posted at 2018-2-5 10:40
I use the iPad mini 2. I have not had a single problem. But the four would be better.

Someone else said the #2 was not powerful enough, I hate it when I have Two credible ppl saying opposite things lol.

Skymax. Posted at 2018-2-6 00:31
Someone else said the #2 was not powerful enough, I hate it when I have Two credible ppl saying opposite things lol.

Life, she is so very unpredictable, eh?   

Skymax. Posted at 2018-2-6 00:31
Someone else said the #2 was not powerful enough, I hate it when I have Two credible ppl saying opposite things lol.

It is powerful enough but the 4 is far more powerful - one is compatible whilst the other is practically optimised. The Mini 4 is often regarded as the best IOS device to use with DJI drones.

I purchased  a 4

I purchased a refurbished mini 4 WiFi  directly from Apple for just over $300.   Full warranty with an older iOS version.   It runs older firmware and “never” needs security updates because it a dedicated flyer, not connected to web.  

EDiT:  ## Was just reading MAC 9to5 online.  Their "DEALS" listed -for sale from Best Buy- new Mini iPad 4, WiFi, 128 GB for $299.99.  Even much better than a refurb ( now at Apple Store for $339 ).  Best Buy offers Apple Care for $70, too, in addition to the Apple warranty.  Worth looking into.

Just as 4# mentioned, the iPad Mini 2 or later versions are compatible. It depends on your budget.