This does not work with my iPhone 5s anymore.
1819183
If purchased after Dec 1st 2013 it works with iPhone 5s / 5c as per posting on the page.
1297701
This will work with iPhone 5s if you have the lightning wire that came with the phone.
536582
I have the iPhone 5--have not tried with 5s--I'd contact the manufacturer -- I did so with another question before I bought the product originally and their CS dept was very helpful...
694083
I am using the cord with an IPhone 5S and it works fine, connecting to the auxilary jack.
644519
I am not able to use it with iPhone 5s. It worked with 4s fine. don't know the reason. It plugs in but nothing comes from the radio.
1174474
Yes, it works with my iPhone 5s. I have had this car charger since December and have no problems with it. It is exactly as advertised.
1312673
No. The 5S has the newer style plug. This stereo has the iPhone 4 connection.
461850
When I plug it into the iPhone 5s shows a message that says "This cable or accesory it´s not certified, so it may not work correctly with this iPhone" and doesn´t charge at all.
1988968
No it does not work with an iPhone 5s. It lacks the port for the scan button, the contacts for the loudspeaker are different. There are other differences also.
1357994
I just talked to Radio Shack about this and they don't carry it anymore because it doesn't have enough power to charge the 5s battery! I had to buy a new car charger.
1060368
If by stepdown plug you are referring to the analog jack, it should work with the iPhone 5s in that case.
1886093
Yes. Same deal for me. Didn't work with 5s until ios 7 upgrade. Still does with ios 8.
780012
Will not work for iPhone 5 or 5s because those use the lightning connection which is different from this one. This is for iPhone 4 and older.
1799099
It's weird cause we use an iPhone and a 6th gen I touch. You plug it in and it says it's not compatible and then you plug it in a second time and it works. Maybe that's why it was discontinued
1541086
Yes, I have the iphone 5s, and it works perfectly well through Bluetooth. Though you may need a 30-pin to lightning converter if you want to connect it directly.
1175917
I can make the MM2Go work with my iPhone 4s and iPad 3 but not the iPhone 5s
1581486
Using your cord it will work with the iPhone 5s. We use it on the Windows phone, Kindle HD Fire and my Asus tablet.