Add an array, which will store the most recent 5 recent transactions. For the array, add an insert function which will store the specified transaction. You will need a index-counter which will keep track of the available index. If more than 5 are stored, it should loop around.

The camera still is bad even with the new iphone xr and especially in low light it is even worst because you can see the pixels more if its in low light. if all you apple customers want apple to fix this then lets fill there feedback with complaints about the can apple do to fix this issue?