Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Can this charge an iPhone 5 and a Samsung Galaxy S4 at the same time?
Document: Product works great, charges phone(s) relatively quickly. I use it to charge an iPhone 5, Blackberry Q10 and even a Samsung Galaxy S4 (I have alot of work devices).
We have an iPhone 5 and a Samsung Galaxy S4 and it works like a charm. It would be difficult to tell if it is snugly inserted without the light. The Galaxy will slowly trickle charge while also using it for navigation on a long trip. The Galaxy did overheat once but I think it was because the sun was beating down on it while charging. It never happened again.
This charger gets the job done for charging my Samsung Galaxy S4 and my Zune mp3 player at the same time. I plan to buy another one for my boyfriend's car so he can charge his iPhone and iPod and stop stealing my charger :)
Went on a roadtrip using this car charger. It worked for both my iPhone 5 and my wife's Samsung Galaxy S4 simultaneously. Definitely would recommend!
Updated Review: I bought the charger for my daughter so she could charge her iPad and Samsung Galaxy S4 in her car. She informed me the other day that the charger hasn't worked in awhile. I ordered the charger a couple of months ago.Old Review: Works great! I love being able to charge phone and ipad at the same time! Great deal at an excellent price.
I have used this on an iPhone 5 and a Samsung S4 phone with no problems. I have not tried using both ports at the same time and did not measure time to recharge. No problems with the phones recognizing the charger, and all did recharge while still being used.
Arrived in good shape and on time. I have only used it once so far and the results where as expected. It recharged my Samsung Galaxy S4 quickly a with no problems.
I have a few USB car chargers and have been looking for a good one for some time.I bought this and used it a few times already.I have a Galaxy S4 and my wife has an iPhone 5.We connected the iPhone on the A port and the S4 on the S port as it says on the manual.
I used this charger in my 1985 Cessna 152 and have run my iPad 2, Samsung Galaxy Tab 2 7&#34; and Samsung Galaxy S2 and S4 phones off it (not at the same time, of course). It feels very well put together and I have used it in all types of weather (cold, extreme heat).I looked for quite a while to find a USB charger that would work at 24V, and this one certainly fit the bill and works great too.
We use this to charge my Samsung Galaxy s3 and my husband's iphone 5 at the same time, in the car, on road trips. It works great.
Answer: Definitely. It's designed to charge an iPhone (or a different smartphone of similar capacity) and a tablet at the same time, with an "S" slot and an "A" slot, one for a tablet and one for a smartphone. However, the max Amps the entire charger outputs at once is 2.4 amps, and amps are what actually adds charge to your device's battery. One slot gets priority for amps when both are being used but I'm not sure which one.But basically yes it should definitely be able to charge those two phones at the same time.