Just wondering what features of your various mobile phones stuck out as being good or just plain rubbish. Which infuriated and which gave you some enjoyment?

Mine are:

Good:

Text messaging - I love writing texts that fill the quota - like a postcard in a way. I don't use predictive and get quite creative!
Roaming - Taking my mobile abroad and still have it text and call amazes me. Technology working well.
PAYG - It shook up the industry and I got rid of my expensive contract pronto.
Lithium Ion batteries - great phone battery life and no memory effect.

Poor:

Infa-red phone ports and Bluetooth - never worked for me and a waste of time (hours spent trying)
Picture messaging - never worked even once and I had great hopes
Blogging on phones - never worked
Mobile e-Mail - sounded useful but never worked
PlayNow feature - 'connecting...connecting...connecting...connection failure'
RSS Reader - non functional
Video calling - I looked forward to it but it fizzled out after an error message and so never worked once

Lets have yours!

Good: I can get an app for almost anything I need

Bad: battery life could be better

Good:

It does everything except make the tea (with the help of apps of course )
I can use the internet anywhere
Angry Birds
No fiddly buttons, all touchscreen
QWERTY keyboard for texting
Can connect to Wifi or use it as a hotspot

Bad:

Battery life could be better
No zoom on camera

Highs
- Playing snakes on my brand new nokia 3210
- Nokia 6210 i think was the first phone i had where you weren't limited by the number of contacts the sim could hold. Finally you could go above 100
- iPhone 3Gs for it's amazing touch screen experience. After a string of blackberrys and a Nexus One which had a terrible mis-calibrated touch screen i found something awesome.

Lows
- Trackballs failing on my old blackberrys.
- Poor battery life on smartphones
- Automatic brightness being poor on every phone i've had prior to the iPhone 4s running iOS 6 - even now it isn't perfect.
- WAP web sites, they were just terrible.
- Blackberry browsing, again awful.

Now i'm just spoilt as nothing new makes me feel as excited as the early nokias'.

Happy medium
iPhones

Good:
Everything barring two things

Bad:
The battery
iCloud doesn't back up things I put on from YouTube!

GOOD:

Android - LOVE it, 4.0 and 4.1 are the best.
Millions of Apps
3310/6233 highs was snake and the fact they could withstand being dropped from a window.

BAD:

Battery life: Worst contenders were N8, S2
Lack of apps for Symbian
Connection problems - 3 why haven't you upgraded the transmitter?

Good:

The Internet in my pocket.

Bad:

Battery life on modern phones.

Had a Samsung phone that asked me whether I was on a plane every time it started up which used to drive me mad. My first Motorola phone on One 2 One had a battery life of about one day and that was if you didn't make any calls on it.

My current Nokia 100 is the best cheap Nokia i've owned. very basic but useful stuff like a flashlight and Ssssssnake.

Good:

Aside from the marvel of calling and texting out and about:
The Internet in your pocket. That covers a vast swathe of stuff including browsers, email, downloads, video and TV;
Affordable gaming;
Internet radio (when there is signal). A million times better quality than DAB and it works in the centre of town without dropout or "bubbling mud";
Instant ability to take pictures and video and upload them to social websites without the need for a separate camera and having to wait to upload them;
Bluetooth headphones. I'll never go back to wired;
Touch screen technology (no need for a stylus or physical keyboard).

Bad:

Touch screen technology (non-tactile feedback and fingerprints on the screen);
Bugs (for Android) can go unfixed for months - case in point, data suddenly dropping after a minute or so on a Nexus 4 which requires a data connection to be reset for it to work again - for a minute. Repeat ad-infinitum. Only happens from one mast and there isn't a fault with it. I pray Android 4.3's radio fixes it;
Coverage can still be patchy in places and even between phones. There's a swathe of the A57 trunk road in a neighbouring town with no service for a few miles on Three (sure it happens to all the other operators too, it did with O2) and service in the south eastern part of town can be non-existent. I hope that area gets one of the new 5000 masts promised by 2015;
The Internet stalls completely should the signal quality get too low and the Chrome browser times out too quickly at times;
The screens, including Gorilla Glass ones, still have a tendency to get scratched through phantom means no matter how careful you are;
Battery life could be better, at least to a point where I don't need to recharge my phone if I go somewhere before coming home.

I'll change the slant on this question.

Good
No longer have the poor range of phones that dogged the 3G network for years.
Now all phones look good.

Poor
Majority of phone shops have no decent displays of models to play with.

Good: Battery pre smartphone days.
Bad: Battery now.

My HTC Desire S
Average camara and good for texting.
Bad points suffers from signal drop outs once in a while and in very weak signal areas.
Im thinking of getting a new phone.

Darren

Good stuff! I have a couple more while I am here.

Good:

Calculator and stopwatch - having those with me has saved a few parking fees and sharing the food bill is easy.
Speakerphone - saves holding the phone to the ear while on hold

Poor:

Ringtones - why did they ever change to tinny melodies from the old style clearer rings?
Small buttons - why make the buttons so fiddly when they used to be easy to use - even with gloves?

I haven't had a phone with physical buttons for years (excluding a home, power and volume buttons) Much prefer touch screen.

Tinny melodies? Maybe you should think about getting a new phone that's a bit more up to date .

Good, it's a laptop in my pocket

Bad, paying £150 to get the screen & frame replaced when I dropped it like a mong.