在双SIM手机之前，您必须手动在SIM卡之间切换以查找联系人(find a contact)、拨打和接听电话、发送短信或从不同的移动支付服务中付款。另一种方法是携带两部或多部手机，每部手机都有自己的SIM 卡(SIM card)。
多亏了双SIM 卡(SIM)手机，更换SIM卡的麻烦已成为过去。
您可以在同一部手机上使用您的个人和工作号码，获得最优惠的运营商电话和数据优惠，甚至保留您的旧号码，而无需将其移植到新的运营商SIM 卡(SIM)上。
什么是双 SIM 卡手机？(What Are Dual SIM Phones?)
双SIM 卡(SIM)是移动电话内的一种设施，允许它运行两个独立的网络服务。这样，当一个运营商出现覆盖中断或缺口时，您可以在SIM卡之间切换。(SIM)
双 SIM 卡还可以通过(Dual SIM)降低通话成本来(cutting down on call costs)帮助您节省资金，因为同一提供商的用户之间的通话价格较低。
如果您是狂热的旅行者，拥有双SIM 卡(SIM)手机意味着您可以在运营商覆盖范围不同的某些区域获得更好的连接，在边界之间移动并保持连接，而无需支付巨额漫游费用。
使用双SIM 卡(SIM)手机（尤其是带有两个收发器(transceivers)的手机）的主要缺点是电池耗电更快(battery drains faster)。发生这种情况是因为两个收发器都处于活动状态，使用双 SIM 活动(Dual SIM Active)技术 ( DSA )，允许两个SIM 卡(SIMs)同时接收呼叫。
大多数流行的手持设备都提供双待机、硬件支持的自动切换状态。这意味着当手机不使用时，两张SIM卡通常都处于待机状态。但是在通话过程中，一张SIM卡会被暂时禁用，以允许激活的 SIM 卡进行操作。
还有其他具有双收发器的高级手机，允许两张SIM卡同时处于活动状态，这样每张SIM卡都使用自己的收发器。
较旧的手机型号可能有一个带两个插槽的SIM卡托盘，但只有一个收发器。(SIM)在这种情况下，您可能需要手动更换SIM卡，因为收发器设计为与一张分配的SIM卡一起使用。
今天，一些手机制造商提供预装了 e SIM的双SIM 卡(SIM)手机。e SIM是内置于手机中的电子微芯片，可用作SIM卡，因此您在更换运营商时无需更换它。
e SIM可以是您使用的主要号码，如果您需要获得第二张SIM卡，您可以添加一张实体卡。然而，由于移动运营商和制造商对该技术的采用不一致，e SIM设置尚未普及。
最佳双 SIM 卡手机(Best Dual SIM Phones)
这是我们现在可以获得的最好的双SIM 卡手机列表。(SIM)随着新手机的发布，我们将确保不断更新此列表。
三星 Galaxy S10(Samsung Galaxy S10)刚问世，S20就发布了。尽管很难跟上Android 领域的最新技术(latest technology in the Android space)，但S20彻底改变了智能手机市场。
这款手机配备了您梦寐以求的高端规格，为您提供应得的旗舰体验。一些引人注目的功能包括一系列引人注目的优质摄像头、播放 8K 视频的能力、通过 SD 卡最高 1TB 的可扩展存储、120 Hz 显示屏、防水和无线充电(wireless charging)。
S20最多支持三张SIM卡——一张 e SIM 卡(SIM)和两张物理SIM卡。该手机还有两个收发器，在 e SIM和第一个SIM卡插槽之间共享。
虽然很高兴知道您可以在一部手机上使用三张SIM卡，但您将无法同时使用 e SIM和第二张SIM卡。另外，您必须通过移动运营商的官方网站购买手机才能使用三张SIM卡。
如果您购买的是解锁版的S20，则无法使用三重SIM 卡(SIM)功能。相反，您必须使用单SIM 卡(SIM)或双SIM 卡(SIM)和可扩展存储。
iPhone 11 开箱即用，配备令人惊叹的双摄像头系统、Apple 的A13处理器和 64GB 起的存储空间。存储空间可能无法扩展，但当免费的 5GB云存储空间用完(cloud storage runs out)时，您仍然可以升级您的 iCloud 套餐。
该手机预装了一张 e SIM 卡(SIM)并锁定到选定的运营商，但您可以将您的物理SIM卡添加为您使用的主要号码。您还可以购买iPhone 11 unlocke d 并将您的 eSIM 设置为您的移动运营商。
OnePlus 8还提供出色的功能，例如全屏 90Hz 显示屏、大电池和三摄像头系统，可为您的照片带来生动感，并为您的视频带来更多细节。
该手机还配备 8-12GB RAM和 128-256GB 不可扩展存储、Qualcomm Snapdragon 865处理器和IP68防护等级（如果您是通过美国移动运营商购买的）。
OnePlus 8具有双SIM 卡(SIM)，使用双待机技术，这意味着与始终处于活动状态的双 SIM 卡(Dual SIM)相比，它可以保护您的电池。但是，该手机一次只能支持一张 5G 和一张 4G SIM卡。
三星 Galaxy A71(Samsung Galaxy A71)是一款中端智能手机，配备全屏显示、用于生物识别的显示屏指纹扫描仪和支持 4K 视频录制的四摄像头设置。
不仅如此，它还配备了骁龙730(Snapdragon 730)处理器、4500mAh大电池、快速充电、128GB存储和6GB RAM。
即使解锁，Galaxy A71也支持双SIM 卡。(SIM)如果您购买带有 e SIM的手机，您将获得完整的三重SIM卡支持保证。手机的SIM卡托支持两张 nano - SIM卡或一张 nano - SIM卡以及高达 1TB 的可扩展 microSD 存储。
LG Velvet手机采用最新设计，采用曲面玻璃显示屏和玻璃后盖，有六种颜色可供选择，在光线下散发出美丽的光芒。该手机配备支持 5G 连接的Snapdragon 765处理器、具有快速无线充电功能的 4300mAh 电池，以及具有 128GB 基本可扩展存储的6GB 或 8GB RAM 。
虽然 60Hz 显示屏可能不是市场上最好的，但 LG 已将其OLED技术投入到这款手机中。此外，这款手机具有三重摄像头设置和一个支持 4k 视频录制的 48MP 主摄像头、一个光学指纹扫描仪和官方IP68等级。
LG Velvet(LG Velvet)有一个混合双SIM卡托盘，使用双待机技术支持一张 5G nano- SIM和一张 4G nano- SIM 。
iPhone SE 2020(SE 2020)拥有与 iPhone 7 或 8 相当的小巧外形和小巧的显示屏，毫无疑问是披着羊皮的狼。
在引擎盖下，iPhone SE 2020展示了一款符合人体工程学的小巧机身的旗舰手机可以做什么。这款手机配备 4.7 英寸LCD显示屏、A13处理器、12MP 摄像头、触控 ID 和无线充电。
iPhone SE使用 e SIM技术像 iPhone 11 一样处理双SIM卡。(SIM)这意味着您必须从移动运营商的商店购买手机，然后在可用时添加物理SIM卡。但是，您只能获得一个SIM卡托盘。
如果不包含Google Pixel 手机(Google Pixel phone)，此列表将不完整。Pixel 4a不仅价格实惠，而且还包含支持出色相机系统的软件。
与Pixel 3a不同的是，这款手机拥有更好的高通骁龙 730G(Qualcomm Snapdragon 730G)处理器、更大的电池、6 GB RAM、128GB 存储空间、5.8 英寸全面屏和快速充电。
塑料支持的Pixel 4a手机为 e (Pixel 4a)SIM和单个 nano SIM提供了下一代选项。
享受双 SIM 卡功能(Enjoy Dual SIM Capability)
双卡(SIM)手机可能只是工作和个人生活之间的完美平衡。随着 e- SIM的引入，您现在可以将您当前的号码直接转移到您信任的提供商，并为商务或工作添加第二张 SIM(SIM)卡。
您(Did)最喜欢的双SIM 卡(SIM)手机上榜了吗？在评论中告诉(Tell)我们。
7 Best Dual SIM Phones and What Dual Sim Is
Before dual SIM phones, you’d have to manually switсh betwеen SIM cards to find a contact, make and receive calls, send text messages or money from a different mobile payment service. The alternative was to carry two or more phones each with its own SIM card.
Thanks to dual SIM phones, the hassles of swapping out SIM cards are a thing of the past.
You can have your personal and work numbers on the same phone, get the best carrier deals for calls and data, and even keep your old number without having to port it to a new carrier SIM.
What Are Dual SIM Phones?
Dual SIM is a facility within a mobile phone that allows it to operate two separate network services. This way, you can switch between SIM cards when one carrier has coverage outages or gaps.
Dual SIM also helps you save money by cutting down on call costs where calls between users of the same provider are priced less.
If you’re an avid traveler, having a dual SIM phone means you can get better connectivity in certain areas where carrier coverage differs, move between borders, and stay connected without enormous roaming fees.
The main drawback of using a dual SIM phone, especially one with two transceivers, is that the battery drains faster. This happens because both transceivers are active, using the Dual SIM Active technology (DSA) that allows both SIMs to receive calls simultaneously.
Most popular handheld devices offer the dual standby, hardware-supported auto-switch state. This means that both SIM cards are usually on standby when the phone isn’t in use. But during a call, one SIM card is temporarily disabled to allow the active one to operate.
There are other advanced phones with dual transceivers that allow both SIM cards to be active simultaneously, such that each SIM card uses its own transceiver.
Older phone models may have a SIM card tray with two slots, but only one transceiver. In this case, you may have to manually swap SIM cards because the transceiver is designed to work with one allocated SIM card.
Some phone manufacturers today offer dual SIM phones preinstalled with an eSIM. An eSIM is an electronic microchip built into the phone that acts as a SIM card so that you won’t need to swap it out when changing carriers.
The eSIM can be the primary number you use and if you need to get a second SIM card, you can add a physical one. However, the eSIM setup isn’t widespread yet, owing to inconsistent adoption of the technology by mobile carriers and manufacturers.
Best Dual SIM Phones
Here’s our list of the best dual SIM phones you can get right now. We’ll make sure to update this list on an ongoing basis as new phones are released.
No sooner had the Samsung Galaxy S10 come out, than the S20 was released. As hard as it is to keep up with the latest technology in the Android space, the S20 has completely changed the smartphone market.
The phone comes packed with high end specs you’d only dream of in a phone giving you the flagship experience you deserve. Some of the striking features include a striking array of quality cameras, ability to playback an 8K video, expandable storage of up to 1TB via SD card, 120 Hz display, water resistance and wireless charging.
The S20 supports up to three SIM cards – one eSIM and two physical SIM cards. The phone also has two transceivers shared between the eSIM and the first SIM card slot.
While it’s exciting to know that you can use three SIM cards on one phone, you won’t be able to use the eSIM and second SIM card simultaneously. Plus, you have to buy a phone through your mobile carrier’s official website in order to be able to use three SIM cards.
If you buy the S20 unlocked, you can’t use the triple SIM feature. Instead, you’ll have to use the single SIM or dual SIM and expandable storage.
The iPhone 11 comes feature-packed right out of the box with a stunning dual camera system, Apple’s A13 processor, and storage which starts at 64GB. The storage may not be expandable but you can still upgrade your iCloud plan when the free 5GB cloud storage runs out.
The phone comes with an eSIM pre-installed and locked to a selected carrier, but you can add your physical SIM card as the primary number you use. You can also buy the iPhone 11 unlocked and set up your eSIM to your mobile carrier.
The OnePlus 8 also offers excellent features such as a full screen 90Hz display, a big battery, and the triple camera system that’ll bring life to your shots and more detail to your videos.
The phone also comes with 8-12GB RAM and 128-256GB of non-expandable storage, Qualcomm Snapdragon 865 processor, and an IP68 rating (if you buy it with US mobile carriers).
The OnePlus 8 features dual SIM using the dual standby technology, meaning it will preserve your battery compared to having the always active Dual SIM. However, the phone can only support one 5G and one 4G SIM card at a time.
The Samsung Galaxy A71 is a midrange lineup smartphone with a full screen display, in-display fingerprint scanner for biometrics, and quad-camera setup that supports 4K video recording.
Not only that, but it also comes with the Snapdragon 730 processor, a large 4500mAh battery, fast charging, 128GB storage and 6GB RAM.
The Galaxy A71 supports dual SIM even when unlocked. If you buy the phone with an eSIM, you’ll get the full triple SIM card support guarantee. The phone’s SIM tray supports either two nano-SIM cards or one nano-SIM card and expandable microSD storage of up to 1TB.
The LG Velvet phone has an up-to-date design with a curved glass display, glass back, and is available in six colors that shine beautifully in the light. The phone features the Snapdragon 765 processor that supports 5G connectivity, a 4300mAh battery with fast and wireless charging, and 6GB or 8GB RAM with 128GB base expandable storage.
While the 60Hz display may not be the best in the market, LG has invested its OLED technology in this phone. Plus, the phone has a triple camera setup with a 48MP main camera that supports 4k video recording, an optical fingerprint scanner, and official IP68 rating.
The LG Velvet has a hybrid dual SIM tray that supports one 5G nano-SIM and one 4G nano-SIM using the dual standby technology.
With a small form factor equivalent to the iPhone 7 or 8, and a tiny display, the iPhone SE 2020 is without a doubt a wolf in sheep’s clothing.
Under the hood, the iPhone SE 2020 shows off what a flagship phone in an ergonomically small body can do. The phone comes with a 4.7-inch LCD display, A13 processor, a 12MP camera, touch ID, and wireless charging.
The iPhone SE handles dual-SIM like the iPhone 11 using the eSIM technology. This means you have to buy the phone from your mobile carrier’s store, and add a physical SIM card later when available. However, you only get one SIM card tray.
This list wouldn’t be complete without including a Google Pixel phone. The Pixel 4a is not only affordable, but also packs software that supports a great camera system.
Unlike the Pixel 3a, this phone has a better Qualcomm Snapdragon 730G processor, bigger battery, 6 GB RAM, 128GB storage, a 5.8-inch full screen display, and fast charging.
The plastic-backed Pixel 4a phone offers the next-gen option for eSIM, and a single nano SIM.
Enjoy Dual SIM Capability
Dual SIM phones may just be the perfect balance between work and personal life. With the introduction of e-SIM, you can now transfer your current number directly to your trusted provider and add a secondary SIM card for business or work.
Did your favorite dual SIM phone make the list? Tell us about it in the comments.
