A few (basic) questions about the iPhone

I just got my iPhone 3GS about a week ago. I am very new to the whole smartphone arena, so some of my questions my seem stupid. Please be kind regardless.
I've learned a lot about the iPhone by trial and error (pressing buttons to see what happens) but one thing I just discovered was the multitasking bar. When I accessed it, I saw every app I had run since I got the phone displayed in the multitasking bar. And I know that by holding the icons on the bar, you can bring up a red minus sign, touch it, and remove that app from the bar. My question is, are all of those apps displayed in the mutltasking bar constantly running in the background, and thus, draining more battery than necessary?
Secondly, on the topic of wifi. I have my phone set to automatically join known networks and ask me to join unknown networks that it detects. However, it doesn't seem to be doing that. I still have to manually go to settings and search for the network. It will automatically join my home network (for example, when I go somewhere and come home, it will switch back to my home network automatically), but it won't do this with, for example, the wifi network at McDonald's even though I did go through the setup and make that network a known network. Am I mistaken in thinking the phone should do this automatically, or do I have to search for the network every single time? Also, since I have "ask to join networks" checked, will it automatically detect nearby networks, or do I also have to manually search for those? I understand this question may be confusing, so I can try to clarify if need be.
My last question is concerning conserving the battery. I currently have both wifi and 3G active on my phone, and I have read conflicting reports of which one drains more battery. Some say to turn off 3G and keep wifi, others say vice versa. I'm at home a lot so I'm always near my home wifi network and don't need 3G for data transfer unless I'm out and about. So is it better to turn 3G off unless I leave? I'm just trying to do whatever I can to conserve battery because I've noticed that the battery drains quite rapidly.
Sorry for the long post, I just wanted totry and clear those things up. I hope you can help me. Thanks in advance.

drew081886 wrote:
I just got my iPhone 3GS about a week ago. I am very new to the whole smartphone arena, so some of my questions my seem stupid. Please be kind regardless.
I've learned a lot about the iPhone by trial and error (pressing buttons to see what happens) but one thing I just discovered was the multitasking bar. When I accessed it, I saw every app I had run since I got the phone displayed in the multitasking bar. And I know that by holding the icons on the bar, you can bring up a red minus sign, touch it, and remove that app from the bar. My question is, are all of those apps displayed in the mutltasking bar constantly running in the background, and thus, draining more battery than necessary?
Only the last 4 apps to be run are actually active and in RAM. The others are swapped out to flash memory in a saved state (i.e you should be able to resume where you left off, if the app is written to support that). They don't therefore drain battery. I close all apps down from time to time (every few days) just to keep things neat.
Secondly, on the topic of wifi. I have my phone set to automatically join known networks and ask me to join unknown networks that it detects. However, it doesn't seem to be doing that. I still have to manually go to settings and search for the network. It will automatically join my home network (for example, when I go somewhere and come home, it will switch back to my home network automatically), but it won't do this with, for example, the wifi network at McDonald's even though I did go through the setup and make that network a known network. Am I mistaken in thinking the phone should do this automatically, or do I have to search for the network every single time? Also, since I have "ask to join networks" checked, will it automatically detect nearby networks, or do I also have to manually search for those? I understand this question may be confusing, so I can try to clarify if need be.
It should automatically list new networks when (a) you're in range and (b) you try to connect to the internet (e.g. browse to a web page or check for email)
My last question is concerning conserving the battery. I currently have both wifi and 3G active on my phone, and I have read conflicting reports of which one drains more battery. Some say to turn off 3G and keep wifi, others say vice versa. I'm at home a lot so I'm always near my home wifi network and don't need 3G for data transfer unless I'm out and about. So is it better to turn 3G off unless I leave? I'm just trying to do whatever I can to conserve battery because I've noticed that the battery drains quite rapidly.
The issue is not which drains more battery, but which you need to connect to the internet. Where you have wifi access, switch off 3G, where you have 3G, switch off wifi.
Sorry for the long post, I just wanted totry and clear those things up. I hope you can help me. Thanks in advance.

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I am thinking of getting one, But have a few questions.
Its my first time on Apple's forum so i hope im not in the wrong section etcetc.
1. Does the iPhone have a good stability? (doesnt randomly break down etc)
2. Does it have a Video camera or just a Camera? (Can i add a video camera?)
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Jake300 wrote:
1. Does the iPhone have a good stability? (doesnt randomly break down etc)
Yes, it does.
2. Does it have a Video camera or just a Camera? (Can i add a video camera?)
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3. Does Safari and Wi-fi cost anything per month etc? (With prepaid)
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4. Is the Call quality good? The Music player good? Applications good?
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A few questions about the iPhone.

Question 1: Does restoring your iPhone and getting the newer firmware help the battery life at all?
Question 2: When restoring the iPhone, I have heard people say that you should back it up. only thing youd lose is contacts and texts right?
Question 3: You guys most likely won't know this...but I have heard that apple is aware that the iphones were rushed and some have had issues. are the ones that they are now sening to the apple stores still old ones with the problems or do they make sure the ones they are sending out now are working good? because i'm just wondering if I should wait until apple addresses us directly about the issues until i buy.

mikkilla wrote:
Question 1: Does restoring your iPhone and getting the newer firmware help the battery life at all?
Possibly, I haven't noticed anything different, but others might have.
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mikkilla wrote:
Question 2: When restoring the iPhone, I have heard people say that you should back it up. only thing youd lose is contacts and texts right?
EVERYTHING is erased off of your iPhone when you do this. You have to sync it back using iTunes regardless of back-ups. Back-ups just remember what settings and content you have on your iPhone so that it syncs everything back the way it was. Much more easier to do this than to start off fresh.
mikkilla wrote:
Question 3: You guys most likely won't know this...but I have heard that apple is aware that the iphones were rushed and some have had issues. are the ones that they are now sening to the apple stores still old ones with the problems or do they make sure the ones they are sending out now are working good? because i'm just wondering if I should wait until apple addresses us directly about the issues until i buy.
Most issues are software problems, which will be resolved with future updates regardless of what phone you have. In my opinion, get it whenever because I don't think Apple will make any changes to the iPhone itself for a long time (years, probably), only the software.
Message was edited by: eaglesflight1258

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Message was edited by: Joao Sousa

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wjosten wrote:
The back is stainless steel.
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