Should an iPhone 5 lock after putting in 4 attemps at a code?

I really need to know this! Should an iphone 5 thats on bill pay lock after putting in 4 failed attemps at a code? I know on my ipad when i get about 6 failed attempts it only locks for a minute or and so forth with 5 minutes, then 20 and so on… But now the iphones locked after putting in only 4 codes wrong! What happened? Really need help someone please answer!

They changed it to lower, that's all.