Since the launch of the iPhone, the majority of fruit fans in China have had such a hope - when will there be an iPhone with dual cards and dual standby? However, Apple has released the iPhone 7, and the waiting fans still haven't waited for the dual waiting iPhone to appear, while the Android camp's dual card dual waiting is not a new topic, and dual card dual waiting is indeed a unique heavy demand in China, so accessory manufacturers have begun to develop dual waiting Apple accessory products, For example, this back clip type double card double standby protective case (produced by Tongda Technology of Mingda) will be introduced to you today

>>>Simple appearance

IKOS's model of this product is K2, and the design of the packaging box follows Apple's simple style, which is consistent with the style of the iPhone.

The IKOS LOGO on the side, however, has a color problem if it uses silver tone and white packaging. It is recommended that the packaging box be changed to black texture. It seems better to match the silver product lines and logo.

The back is also a standard design language. A product description sticker briefly shows all the main specifications of IKOS K2. K2 is mainly suitable for iPhone 6s/6 models. However, due to the Bluetooth protocol, other models that currently support iPhone 4s and above include the iPad and itouch. However, considering the protective case design, K2 is mainly intended for 6/6s users. The latest iPhone 7 camera cannot be well adapted.

The main color of the machine body is black, and the silver round button is the switch button/call control button.

The IKOS K2 body has a good texture and is not easy to be stained with fingerprints. The IKOS LOGO design is generous and matches the back shell very well. In fact, another IKOS product, K1S, uses a key pendant design. Although it is not as good as K2, it can also be paired with more Apple models. You can also search for it.

As usual, the family photo includes nano card holder, lighting/microUSB dual charging cable, and instructions. K2 uses the MicroUSB charging port instead of the lighing interface, so the paired dual charging cable has a place of use, but in fact, the use scenario is slightly strange. However, the included accessories also solve the charging problem of the two, and do not interfere with each other. K2 has a built-in lithium battery, but the official did not specify the battery capacity, so the specific number cannot be given.

K2 does not directly use the nano card slot, so it needs a card holder. On the one hand, it may consider that most of the dual card dual standby user secondary cards are large cards or MicroSIM cards, so it uses the MicroSIM card slot design to adapt as much as possible. It is a pity that IKOS only supports GSM mode and cannot support telecom cards.

However, the card slot is directly exposed without other protection. Although it cannot be seen after being put into the phone, it is unclear whether it will scratch the back of the iPhone in some cases.

It can be seen from the cutting and fitting process of the corners that K2 is excellent in workmanship, and there is no adhesive, burr, etc.

>>>Function introduction

The strip below the camera is an independent K2 speaker, which can sound independently and play the role of a speaker. The sound is moderate and the call voice is relatively clear.

The four corners are rounded and comfortable to hold.

In the bottom photo, you can see that there are two holes on both sides of the USB port. The left side is the power/Bluetooth connection indicator, and the right side is the call mic. When disconnected from the mobile phone, K2 can answer the phone independently and sound through the speaker mentioned above. It is also one of K2's unique skills.

It is a little thicker than the iPhone, so I began to doubt whether such a shell would affect the feel of the iPhone. However, the actual grip does not have much impact, and the design of the K2 edge is very thin, so there is no thick gap on both sides. The key hole is also designed reasonably, which does not affect daily use.

The increased thickness is due to the radian of the palm, so you can hardly feel the hand. The upper and lower parts of the mobile phone are not fully packaged for easy installation, and sufficient space is reserved for charging and headphone holes for easy use.

>>>IKOS APP

IKOS apps can already be obtained in the Apple Store. After installation, you need to obtain some system permissions, and you can select Allow in turn. The main purpose is to obtain contacts, geographical location, etc. It is also convenient for the app to identify communications, so it is recommended to select Allow for all.

By registering an account, IKOS can use some cloud services, such as lost push alerts. You can use your mobile phone number to register and log in. The main categories of App functions are SMS, contact, dialing, and settings. It's easy to get started. The settings include all the customized settings, such as ringing tone, binding device, power display, disconnection reminder and loss prevention reminder.

When using for the first time, you need to bind the IKOS protective case under the scanning option in the App. Bluetooth under the iPhone setting cannot be bound successfully. The IKOS setting is rich in content, and you can also customize the incoming call, SMS ring tone, and set the key function, App lock gesture, Bluetooth disconnection reminder, lost search, etc. It is recommended to open all the above contents here. Although the volume of incoming calls/short messages can be set separately, the volume of the built-in speaker of IKOS is not very loud. In noisy environments, some information may be missed. Therefore, IKOS also supports the system to notify incoming calls. SMS messages can be notified by IOS itself, so the above situation has been solved very well.

As can be seen from the screenshot above, IKOS's incoming call interface is very close to the IOS system itself, providing SMS rejection function. The incoming call geographic information, avatar and other information are also very complete. The SMS interface is basically the same as the original IOS, and the incoming call notification can also be normally displayed on the lock screen interface. IKOS APP is well integrated with the system, and it is convenient to use without too many differences.

If some SMS messages are missed, and a phone or SMS message enters when a call is made or Bluetooth is disconnected, there will be obvious red marks on the corner or message icon of the APP after IKOS is linked. However, some problems were also found during the initial use. For example, if the icon below the IKOS APP with the enlarged IOS theme is selected, it will ghost, and the app will disconnect accessories from time to time (IKOS The protective case is worn on the mobile phone). The ghosting problem should be caused by IKOS's failure to adapt to the two IOS theme modes. However, after troubleshooting, I found that I had turned on the background refresh prohibition. Because IKOS needs to automatically refresh the background program in order to achieve real-time access to calls and SMS messages, If it is prohibited, the system may automatically clean the IKOS APP. Please pay attention when using it.

A problem introduced here is the power consumption. According to my daily usage, 3/4 calls and 6/7 SMS messages can consume about 50% of the power in one day, which can basically be standby for two to three days. However, it is recommended to start charging the next day. If the secondary card is mainly used for calling, it needs to be flushed once a day. The charging efficiency is also good. It can be fully charged in about 1.5 hours, and 30~40% of the power can be charged in 10-20 minutes in an emergency.

Features: In addition, IKOS supports independent work. It can ring an incoming call without Bluetooth connection to the mobile phone. It can answer a call by pressing the silver round button on the back. IKOS calls through the speaker on the back and the call mic near the charging hole. The overall call effect is satisfactory. This function is also one of the features of IKOS different from other similar products.

>>>Summary

The IKOS back clip sub card protective case is a very recommended product both in terms of workmanship and function. The current iPhone still supports the single card mode, IKOS has a broad audience and market. What's more, it supports the independent call function. The overall appearance and volume can fit the iPhone in such a way. The lightweight package design makes daily use comfortable, and the standby time can basically meet the daily needs, The attached double end charging cable can charge the protective case and mobile phone at the same time, which also reflects the manufacturer's attention to details. At present, the official selling price of IKOS K2 secondary card protective case has not been officially released, but according to the price of K1S predecessors, the price of K2 should be about 299 yuan, which has a high cost performance ratio. At present, the model launched is suitable for 6/6s models. It is hoped that the size of the camera opening can be improved to adapt to the iPhone 7, and the model of plus models can also be developed, If you also need dual card and dual standby, this IKOS K2 dual card protective case should be your preferred accessory!

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