手机卡留在家，
电话短信跟你走Leave your SIM at home.
Take your calls with you.
BTRoam 盒子用蓝牙连着家里的手机。人在国外，打开 App 就能用原来的号码接打电话、收短信和验证码，不用开通国际漫游。The BTRoam box pairs with the phone you leave at home over Bluetooth. Abroad, the app lets you make and take calls and receive texts and verification codes on your own number, with no roaming plan.
一个号码，走到哪用到哪One number, everywhere
不换卡、不开漫游，国内的银行、外卖、快递电话和验证码一个都不漏。No SIM swaps, no roaming: never miss a bank call, delivery or verification code from home.
接打电话Calls
来电像普通电话一样在锁屏响铃，去电显示的还是你原来的号码。Incoming calls ring on your lock screen; outgoing calls show your own number.
短信实时转发Texts in real time
银行、平台的验证码一秒内推送到 App。Verification codes reach the app within a second.
全程加密Encrypted
信令走 TLS，语音逐包 AES-GCM 加密，配网时 Wi-Fi 密码也是加密传输。TLS signalling, AES-GCM on every voice packet, and an encrypted Wi-Fi setup.
清晰稳定Clear and steady
宽带语音，每个语音包都带冗余，网络抖动、丢包也不容易断续。Wideband voice with redundancy in every packet, so jitter and loss don't break it up.
蓝牙一键配网Bluetooth setup
App 靠近盒子自动发现，选 Wi-Fi、填密码，几分钟搞定。The app finds the box over Bluetooth; pick your Wi-Fi and you're done in minutes.
自动升级Updates itself
固件远程升级，断网、断电后自动恢复连接。Remote firmware updates; reconnects by itself after outages.
三步开始用Three steps
盒子和装着手机卡的手机放在家里，插电、连 Wi-Fi 就行。Keep the box and the phone with your SIM at home, plugged in and on Wi-Fi.
插电Plug in
新盒子插上电就进入配网模式，指示灯快速闪烁。A new box enters setup as soon as it's powered; the light blinks fast.
App 配网Set up in the app
在 App 里添加设备，自动发现盒子，选家里的 Wi-Fi。Add a device in the app; it finds the box, then you pick your home Wi-Fi.
连接手机Pair the phone
家里的手机蓝牙连上盒子，打开短信通知，完成。Pair the home phone with the box over Bluetooth and allow notifications. Done.
价格Pricing
一次买盒子，按月付服务费，随时停。Buy the box once, pay for service monthly, stop any time.
- BTRoam 盒子 + 电源线BTRoam box and power cable
- 支持 iPhone 和安卓手机Works with iPhone and Android
- 固件终身免费升级Free firmware updates
- 不限次数接打电话Unlimited calls through the box
- 短信、验证码实时转发Real-time texts and codes
- 全球任何有网络的地方可用Anywhere with internet
通话走家里手机卡，按你的手机套餐正常计费（国内通话），不产生国际漫游费。Calls go through your home SIM at its normal domestic rates, with no roaming charges.
常见问题FAQ
家里的手机需要一直开着吗？Does the home phone need to stay on?
需要。手机和盒子放在一起，保持开机、充电，盒子通过蓝牙替你接打电话、读取短信。Yes. Keep it near the box, switched on and charging; the box uses it over Bluetooth for calls and texts.
对家里的网络有什么要求？What network does the box need?
一个 2.4 GHz 的 Wi-Fi，普通家庭宽带就够，每通电话大约占 200 kbps。A 2.4 GHz Wi-Fi network; ordinary home broadband is plenty, about 200 kbps per call.
在国外打电话要钱吗？Do calls abroad cost extra?
App 走网络，只用流量或 Wi-Fi。电话由家里的手机拨出，按国内资费计费。The app uses mobile data or Wi-Fi. The call is placed by the phone at home, at domestic rates.
支持哪些手机？Which phones work?
家里的手机支持 iPhone 和大部分安卓手机；App 目前支持 iPhone，安卓版即将推出。The home phone can be an iPhone or most Android phones; the app runs on iPhone, with Android coming soon.