How to delete pictures from my iPhone?

Without doing it picture by picture? The pictures I've taken on my phone are taking up a lot of memory. I've already copied them to my computer, so how do I delete them from the phone now? The only way I can see is by hitting the trash button while viewing it on the phone, but I don't want to do that for 1200 photos, since it takes a few seconds to load each time. Is there a way I can delete them all at once?

Stolen iphone 4s and has a passcode

Hi so last night i lost my iphone 4s and it has a passcode, i have my pictures and my emails and everything personal on that phone, i'm afraid that the thief will have access to my phone and get all my info, is there anyway to do that, once i'm back to the states i'm going to report that iphone, so they can't use it as a phone but i don't hqve the serial number,
oh one more thing i can't track down my iphone thru icloud, cuz the phone has no internet connection! What if they restore the iphone to factory settings, will they be able to get access to my info please help

Why is my hotmail account blocked?

Like once a week my hotmail on my iPhone says 'password incorrect' so when I go on the Internet to log into my hotmail it says someone has tried to access it and send junk mail out I don't understand as I have changed my password like 20 times now and It still happens! Anyone have an idea how this is happening as I have my PayPal connected to this email and I'm worried incase I get robbed or something

Lost my unlocked iphone 4s? It has a passcode?

Hi so i traveled to israel with my mac book and my iphone 4s its unlocked has a sim card, yesterday i lost it i don't know how, the iphone has my pictures and my personal stuff and emails, but it has a passcode, and its not an esay one, the thing is i can't track the iphone using icloud, cuz the phone has no internet, now y question is, can the theif use that iphone, can i do anything to delete all my stuff from that iphone, can that person pass the lock, or hack or do anything about it, please let me knoe anything will help!

Why does my iPhone battery die so quickly?

I had my iPhone for about a year and a half, and recently I've noticed that the battery is draining incredibly fast. I've always had it on 3g internet/Wi-Fi and the battery never died this fast so I don't know what the exact problem is. I charged it to 100% yesterday and I only used it for maybe about 10 minutes and left it untouched for the rest of the night. Today when I woke up the phone was dead. I haven't changed the settings or anything fyi.

I got this weird text form an unknown number? What the?

It says: "You have won 250, 000.00 pounds from APPLE iPHONE CASH SPLASH PROMO with ref no (a number). Email your name & details to iphoneapplecentre@gmail.com for claims."

What is this about? I shouldn't email anything- should I?