What causes the yellowing and can cleaning it periodically correct any yellowing?
829467
This case is crystal clear and will not yellow. Yellowing is extremely uncommon with this case. The case is high quality and also backed by a 60-day warranty.
1264688
Not so far. I have only had mine since the iPhone 5S came out, but my Mother has had hers (for iPhone 5) for over 1 year. So far, no yellowing for either of us.
865135
I've had a similar experience. I suspect it has to do with minerals in the water. Assuming it comes from your tap water, it should be safe. If you really think this a problem then you could try using distilled water. I'm not a chemist, but the heating surface appears to be Teflon or something similar. So I typically remove the discoloration with mild soap and water, the sooner after it's cooled enough the better, or with some vinegar. As for safe, I use my regularly and have had no problems.
1854651
I have used this ink system. My prints have not turned to yellow. The problem could be contamination caused by the printer. The excess ink goes into a well below the head and it could be picked up when the head resets. Try doing an extensive cleaning of the printer. I am assuming that the printer being used is an Epson R2000 since this is what I am using with the CISS system installed.
914321
It definitely helps. Yellowing is caused by a number of factors including air. Just having it in a tightly sealed bag will slow the yellowing process down to almost nothing.
1528011
If you cleaned it you may have damaged the little silver disk on the bottom. I don't think there is a fix. I would let it dry out completely, then the next day fill it up again and let it sit for a few hours before you try turning it on again. I have had 1 break because I was not gentle enough when cleaning it. If there is a fix for damaging the little silver disk, I don't know what it is. Sorry I couldn't be more help.
1556774
It hasn't, it's been about 4 months since I got it. I believe the yellow coloration on that type of material is caused by overheating like Sun exposure or the phone itself. The contact with some cleaner product is most probable. I had different cases in clear and that happened to them. Not on this particular brand
2207782
I didn't have any yellow stains when mine arrived. However, yellow may appear over time but So you may want to exchange.
637805
Soak it in vinegar I suppose. Mine is stuck with blue mode only. No more red or green
410054
Mine started discoloring also. I wish I could help you but I haven't been able to clean mine as well.
2270833
Nope. That's not normal. Mine is consistently green. It turns yellow for a minute or two when I have lots of air movements and it goes back to green after. I can tell the difference in cleanliness in the air for sure.
1199315
That sounds like a fungus. I would give it a try. When my machine turned an ugly brown, after 8 years, this product took care of it in one use.
1055850
Yes, initially. But this "S" type turns to yellow after 2/3 months of use so be aware ...
1944563
I've had mine for several months now, no yellowing & they look brand new still. I do keep mine in the case when I'm not using them.
931684
If it is evenly grayish, I would be inclined to think it is just discoloration. I wash mine in the dishwasher and don't have any of that. Mold would get worse. Just keep it clean.
289682
You really need to replace it. It will turn grey/black with dirt. As a maintenance factor you can rinse the removable filter that covers it but when it significantly changes color, you need a new one.
1276642
No, I'm sorry I can not help. As a matter of fact, I am having the same problem. I have tried various cleaners without any luck. Finally, I just stopped scrubbing on it. I basically just gave up. Any suggestions from others would be greatly appreciated.