How to permanently delete old chats on snapchat? (iPhone 4s)?

Whenever I chat with someone in the chat part of snapchat and then go to clear history or delete snaps it'll delete them but the next time I chat with the same person if I scroll up it'll still show all the msges, chats, etc. Anyone know how to permanently delete them? (Don't say go to the tool icon and go to delete snaps or clear history because I do that and it still shows old chats.)

Why do I receive poor Wi-Fi signal at my house?

I work out back in my shop not even 100ft away from my house and I can't hold my Wi-Fi connection on my tablet or my iPhone. When I do it's only one bar, very slow, and sometimes it won't find my Wi-Fi signal at all. This has become a major problem for me because I work from home and I need my devices to function properly. My phone constantly turns over to use my LTE or 3G network and it's racked up 60+ in overage data charges for at least 6 months now. We just moved here if that makes any difference. Anyway I've called my cable company and they reset the connection and it did nothing, I switched cable company's and still the problem persists. Why this baffles me is because when I search available networks on my phone, my neighbors network has full bars that I could connect to but seeing that I don't have their password to join their connection That doesn't help. But it makes me wonder why I can recive full signal from their wifif and not mine when they are further then me then I'm from my Wi-Fi box so it makes no sense. If I'm inside my house I get full bars. Any advice would be helpful

Taking a good makeup photo

First of all I'm not a makeup artist, but I love makeup, now when I take pictures off eye makeup the results are bad, I look at some peoples make up photos they look so vibrant and clear, any suggestions that I can make my photos look vibrant and clear colour? Or any apps I can use to make them that way? I use a iPhone 5 S, IOS 8:)

Or do they use a special camera?

Help to bypass iCloud activation in iPhone 4s?

I bought an iPhone 4s from a guy for a low price and then i upgrade it to ios 8. Now they 're asking me apple id and password so i asked the owner he said he forgot even the apple id. I tried out many methods to bypass but none of them work due to ios 8 and i can't downgrade to ios 7 now because apple stopped supporting downgrading.Is there any way to bypass, I tried to find DouCI too but can't find an active link most of them are spams.
Help i really need to bypass now that the owner won't take back the phone.

Added (1). Please don't put up u scam websites and surveys.