“外出旅游发生意外手机没信号时怎么求救？”下面网友提供的措施也许您能用上。

“Traveling accident cellular phone have no signal how to for help？”The net friend to provide measures perhaps you can。

　　江南快线：建议出游带一件红色或黄色（越鲜艳、越醒目越好）防雨服。天冷可以御寒，雨天可以防雨；遇意外时，可手举衣服挥舞或挂于高处以吸引他人注意。

Jiangnan express：Suggest to travel with a red or yellow（Is more bright-coloured、More eye-catching, the better）Rain suit。Days cold can keep out the cold，A rainy day can prevent the rain；Encounter an accident，Can reach clothes brandish or hang in high to attract attention。

　　詹姆斯道长：如果在野外迷路了，尽可能捡大道走，切忌漫无目的奔跑等消耗体力的行为。嘴巴尽可能不张开，避免水分流失。看周围有没有人为的痕迹，有的话沿着痕迹走，利用一切能用得上的东西，比如钥匙可以划下自己沿途的标记，免得迷路。

James expert：If in the wild are lost，As far as possible to pick up main road，Avoid by all means is aimless run consumption such as physical behavior。Don't open your mouth as far as possible，To avoid the loss of water。See surroundings have artificial trace，So go along the trace，Take advantage of all can use things，Such as key can delimit along their mark，Lest lost。

　　神仙哥哥：白天想办法制造浓烟，晚上想办法制造明火。

Fairy elder brother：The day trying to manufacture black smoke，Night trying to make open flame。

　　工口叔：准备2个求生用品：SOS口哨和强光手电筒，强光手电筒请使用长亮三下闪亮三下再长亮三下SOS求救信号。

Work mouth tertiary：Prepare two survival supplies：SOS whistle and the strong light flashlight，The strong light flashlight please use the long light shining under three three long again three bright SOS distress signal。

　　陈文勇：使用对讲机，公共呼救频率438000 U段，如果有附近的中继频率，使用中继频率，手机无信号时，可以使用GPS软件定位，把自己准确的GPS坐标通过中继频率呼叫出去。

ChenWenYong：Use intercom，Public distress frequency 438000 U section，If there is nearby relay frequency，Use relay frequency，Mobile phone no signal，Can use GPS software localization，The accurate GPS coordinates through the relay frequency call out。

　　罗应尧：可使用反光片、信号灯（或头灯）、口哨等发送求救信号。一般情况下，重复三次的行动都象征寻求援助，具体包括以下方法：

ROM. Should be yao：Can use reflectors、light（Or head lamp）、Whistle and send distress signal。generally，Repeat three actions are symbol for aid，Specific include the following method：

　　烟火信号：燃放三堆火焰是国际通行的求救信号，将火堆摆成三角形，每堆之间的间隔相等最为理想。

Fireworks signal：A three pile of flame is the prevailing international SOS，The fire will be put into triangle，Each of the interval between the most ideal is equal。

　　旗语信号：拿一面旗子或一块色泽亮艳的布料系在木棒上，持棒运动时，在左侧长划，右侧短划，加大动作的幅度，做“8”字形运动。

Semaphore signal：Take a flag or a piece of colour and lustre LiangYan cloth system in the sticks，The rod motion，On the left side dah，Right short stroke，Increase the range of the action，do“8”Glyph movement。

　　反光信号：利用阳光和一个反射镜即可射出信号光。任何明亮的材料都可加以利用，比如罐头盒盖、玻璃、一片金属铂片，有面镜子当然更加理想了。持续的反射将规律性地产生一条长线和一个圆点，这是摩尔斯代码的一种。即使你不懂摩尔斯代码，随意反照，也可能引人注目。

Reflective signal：Using the sunlight and a mirror can injection signal light。Any bright material can use，Such as tin lid、glass、A piece of metal platinum piece，A mirror of course more ideal。Constant reflection will regularity to produce a long term and a dot，This is the Morse code a。Even if you don't understand the Morse code，Optional albedo，May also be conspicuous。