Tuesday, November 21, 2017

Piaggio/Vespa scooter regulator test and replacement

The battery on my Piaggio LT150 is no longer charged while riding. It took me quite a while to figure out how to access the charging unit, turned out to be quite easy as showing in this video:

This video also shows how to test the regulator, replace it and mount everything back.

Friday, July 7, 2017

How to make headphones comfortable

It is summer time, your headphones become hot and sweaty. Here comes the fix:

Thursday, June 29, 2017

The best version of Yandex  Older versions cannot block some sites' pop up ads, such as 6park.com, and no option to save passwords for many sites. Newer versions have the tableau totally messed up.


[in Chinese]


  • 能无极缩放,又能自动满行,还有阅读模式。
  • 能记住所有网站的密码。当然你也可以选择不记。
  • 支持所有的电脑上的Chrome和Opera的插件,也就是这个浏览器无所不能。
  • 页面整洁,不像Chrome和UCWEB里的有些字太大、有些字又太小。
  • 看Youtube没有广告(不需要安装任何插件),自动全屏。
  • 不像UCWEB和Chrome那样发热耗电。
  • 写了一半的帖,reboot后都还在,一字不漏。
  • 地址栏在下面,很贴心(平板时还是在上面)。

Wednesday, June 21, 2017

Two big problems with Le S3

Encountered two big issues with the Le S3:

1) No android.net.conn.CONNECTIVITY_CHANGE broadcast, apps are not aware of network changes, such as register loss of SIP after switching from WiFi to mobile data or vice versa.

2) No setExactAndAllowWhileIdle(), apps cannot do things periodically, such as register of SIP every 15 minutes.

The result is: communication-based apps become totally unreliable. Seems a general issue of such Chinese phones.

[Solution] Install the unofficial LOS 13.

 [In Chinese]

网络有没有变化。自Android 5.0一来,这个广播总是乱广播、误广播,所以我在我自




需要用手机干正经事的,还是不能买这些国产手机。Axon 7我没有真正使用过,不知道



【解决办法】刷unofficial LOS 13,一切问题都没有了。

Monday, June 19, 2017

How to solve the touch issue of ZTE K88

If you experience touch issues, you must update your Trek 2 HD. It is a very tricky process though.

First thing first, you must insert an active SIM card that uses AT&T network, such as H2O or AT&T prepaid (goPhone). You don't need to enable data, you can disable it, but you should use AT&T's APN.

Now connect your tablet to Internet via WiFi. Wait for a while for the auto update to start. Once started, you can see downloading activity in the WiFi icon:

If no go, reboot.

If still no go, force update manually. Go to settings and AT&T Software Update, Check for Updates. If it goes through, all good. If not, saying "try again after 24 hours", then you need to change your phone's date one day ahead (tomorrow). Then reboot, wait for a while for it to auto update. If no go, try manually update again. If fails again, repeat.

You have to update to B29 or B33, to solve the touch problem.

How dual-SIM phone work

Dual-SIM phones are not new, but until recently they were not good enough for both voice and data. The ZTE Axon 7 is the one that represents the new generation of dual-SIM phones.

An alternative is the Le S3 for about $150. It lacks some Verizon bands though and it cannot make calls with a Verizon SIM; LTE data only. The Mini version of the Axon 7 is very similar to the Le S3 on these regards; so is the Le Pro 3.

With such a dual-SIM phone, you can use the cheapest or best services for voice and data separately. For example, you can use a Tracfone or ExpoMobile SIM for very cheap and good voice calls on Verizon network while using a T-Mobile SIM for data. You may also use a Truephone SIM for free voice calls and text while using another SIM for data on T-Mobile, Verizon or AT&T. Such a dual-SIM phone is also extremely handy when you travel in another country including China.

Two big issues with Le S3

Friday, May 12, 2017

Netgear N300, a good router for $17

My old D-Link DIR615 finally decided to quit after many years and recently I had to restart it daily. Saw some $17 routers in Walmart, Netgear and Belkin, and decided to give them a try. I grabbed the last Netgear N300, model WNR2000v5, while many Belkin's were still there.

Setup was extremely easy and configuration was all done by itself. All I did was open "www.routerlogin.net" on my computer to confirm that I want it as an AccessPoint. I always use a netbook as a flexible and powerful router and home server for everything.

Much faster and better coverage than before. Now I can watch local HDTV stations over WiFi smoothly. Wish I had done this earlier.

It is a very small box standing up. No extruding antennas. The case is full of heat-dispense holes, ice cold to touch, a good sign of many years of smooth servicing.

Although insanely cheap, it has a power button! saving the hassle to unplug and replug the power in case a reboot is needed. Even more incredible, a WiFi on/off button too, above the WPS button.

In Chinese:


设置非常简单,我只启用了Access Point模式,然后全是它自己设定。