1. Nokia 3310 (2002)
This is my first phone, Nokia 3310 ! I bought it in second condition for $60. I love this phone, so tough, have a great keyboard for SMS. See its full specs here
2. Nokia 2100 (2003)
This is my second mobile phone, actually i didn't very like this phone, more because it had a girly looks. But at that time, i had to bought a phone, because the previous one has broken. Bought it (new) at $110. This phone was so lightweight, had a soft blue backlit, and had a great polyphonic ringtone maker. Full Specs
3. Siemens M55 (2004)
So Nokia 2100 hadn't fitted my personality, and broken up. So I need a more advanced phone. A phone with internet capabilities, with WAV ringtones, and a colored display. So I choose the Siemens M55, a tough phone, looked macho, advertised as scorpions, display color, Java Games, and of course WAP-enabled! Bought at 2nd-handed market for $140, i very loved this phone. Unfortunately, the keypad went broken, and I had to sold this phone :-(. Full Specs
4. Sony Ericsson (2005 - 2007)
Next, I had bought a Sony Ericsson K700i, a sophisticated phone at that time. A rival to Nokia 6600. With sharp display resolution, crispy speaker, MP3 & MP4 supports, FM radio, Java Games, had a great camera with flash (although its only had VGA resolution), but poor at night. I love its push e-mail, fast GPRS browser, and easy navigations. The worse parts were : the small storage (41MB) and the bad quality port closer at the bottom of the phone. Full Specs
5. O2 XDA II Mini Pocket PC (2008 - 2009)
I given the K700i to my brother-in-law. I need a phone that have a capability to read Ms.Excel spreadsheet, to read a code generator for my company core-apps. So i choose the O2 XDA II mini for $160 (2nd-handed). This is my first touch screen phone (with stylus). Installed with Pocket PC 2003, i installed many Windows Mobile apps and games. The phone was so heavy, poor very poor camera without flash, and i got calibration error on its screen. Later, i upgraded it with Windows Mobile 6, some improvement. I throw this phone because the battery was dropped, and the charger was broken. Full specs
6. Esia Huawei C2801 (2009)
The XDA II mini problems were getting annoyed. I need a phone for my daily activities. Since I ain't got much money, so I decided to bought an Esia Huawei C2801 featured phone. This phone was so cheap ($30, new), bundling and locked with Esia's cell operator. This is my first CDMA phone, it has an awesome battery life, could last till 1,5 weeks on standby mode. The network coverage of Esia were good at Jakarta, but poor outside of it. Well, I just used it for voice call and sms, and this phone had enough for that.
7. Nokia E71 (2009 - 2011)
I liked Nokia, but I never liked Symbian. Somehow, i don't know, why I still put a trust on Nokia E71. This is the most expensive phone I ever bought for entire my life ($399, new). And the result? I were very regretted :-( On the specifications, this phone was awesome. 3G/HSDPA, 3.2MP camera, QWERTY keyboard. But when I used this phone, the Symbian run very slow, the browser was slow as snail, the camera result was great on phone screen, but went unsharpy on PC's screen, poor Ovi Store... anyone still use the Ovi Store?? The WLAN gone sucked, the push email wasn't very good. The battery life was average, the speaker was great. Full specs
8. Flexi ZTE S189 (2010)
I got this phone for free for our IT crews internal communication. This phone was so lightweight, great battery life. But this phone also had a uncomfortable keypad, no vibration, boring ringtone, and Flexi voice quality were so poor. My ears would getting warmer if I used this phone for a long time.
9. Samsung Galaxy Ace S5830 (2011 - 2013)
So I gave the E71 to my wife as her second phone. Now, the Android era! So I choose the Samsung Galaxy Ace S5830 at that day ($225, new). Equipped with Android version 2.2 (Frozen Yoghurt), I very loved this phone, but I hate its 'small' battery. I'd installed many Android apps and games from Google Play. I do not feel much left out, although I still use the outdated Froyo's OS. Full Specs
10.  What's next ?My Samsung Galaxy Ace, has often give me some errors and slow performances in these days. It's seems to be a signal to me to find a new phone. I still haven't found any phone that i'll bought. I need a powerful smartphone, wide screen, good battery life, sharp camera, and of course the price must be reasonable.
Would you give me some suggestions or recommended some phones to me? I'll be pleased to hear your recommendations. Oh yea, please don't recommend any Blackberry and iPhone to me. Seriously, I won't use BB. I like iPhone, but the price is too high for me. Wasted $600-$900 for a mobile phone seems unreasonable for me (maybe not for you hee...). So I will choose among Android or Windows smartphone.
10. Lenovo P780 (2014 - present)
At last I put my choice to Lenovo P780 4GB. 5-inch screen, Quad-core MTK procs, 1 GB of RAM, Android Jelly Bean, Dual-SIM (actually i just need one), double camera with flashlight on the back, superb 8MP camera result ( a liitle whitey on grey object, but it's okay), aaaaaandd ... the monster size battery !! With 4000mAh on capacity of battery, this phone could hold for 3 days (light use) or it's about 1.5 days for heavy usage. Much enough for someone like me. No more afraid of low battery. Recommended one!