First of all, when I saw the trial of the CoCase multi-function protective case, I was most impressed by the words "multi-function". Now many brands of mobile phone cases on the market are featured with smart functions, such as being used as a power bank, being able to sleep on the box cover, and being able to use dual cards and dual standby. However, the functions are often relatively simple and may be discounted in practicality. However, after watching the introduction of the CoCase multi-function protective case, it is mainly designed and produced for the Apple 7 series mobile phones without a 3.5 headphone interface. I believe that friends who use Apple 7 series mobile phones will have a deep feeling, but someone asked why not use Bluetooth headsets instead. My answer is that the first use feeling is different, and the second sound quality and sound effect cannot be presented perfectly, The third is what to do if the Bluetooth headset has no power. Let's share the trial experience of the Love Demon Guest CoCase multi-function protective shell:

The first, of course, is the beautiful picture of unpacking

On the whole, the package is simple, especially marked with trial labels, and there are no redundant items in the practical design. I like the black frosted mobile phone case, and thank the manufacturer for sending the frosted black mobile phone case. After unpacking, I went to find the charger, and finally found that the charging port was compatible with the Apple 7 charging data cable.

Second, introduce the functions

The manual is very compact. Two languages and three writing methods (simplified Chinese, traditional Chinese and English) respectively introduce the product schematic diagram, instructions for use, FAQs, packaging content and warranty instructions (the warranty period is one year). After reading it, we can conclude as follows: the mobile phone case is compatible with Apple data cable, supports fast charging, cannot support the remote selfie stick, and supports the CTIA standard 3.5 headphone interface. Simply popularize the difference between OMTP and CTIA standards:

International standard (CTIA) 3.5mm interface: the pin connection is left channel right channel ground wire microphone. It is also the most popular and widely used connection in the market.

National standard (OMTP) 3.5mm interface: the pin connection is left channel - right channel - microphone - ground wire. If an international standard headset is connected to a non international standard interface, only the background sound will appear. Press and hold the call button on the microphone to display the voice normally.

Step 3 Charging trial

I couldn't accurately calculate the charging time. I left it at home for about an hour and 40 minutes to recharge when I got back. The blue light turned green and the charging was completed.

Next, connect Bluetooth to start the first trial. (Power on key) Press and hold for about two seconds when the machine is turned off to start the machine; Press and hold for 5 seconds, and the indicator flashes blue and green alternately to enter pairing mode.

In the shutdown state, press and hold for 3 seconds to shut down the device.

Press briefly to pause playing music; Short press to answer a call, long press to reject a call, short press during a call, and end the call.

(Volume up/down key) Press briefly to increase or decrease the volume, long press to continuously increase or decrease the volume, and press twice continuously to switch songs.

I prefer to use earphones at the top. I am more accustomed to the earphone hole at the top and the charging hole at the bottom, so that I can listen to music or watch TV and play games while charging. Such a convenient way can be achieved with the CoCase multi-function protective case, which may affect the service life of the mobile phone battery.

Fourth summary

1. Beautiful appearance, comfortable hand feel, plus my favorite black mobile phone with a black matte phone case more beautiful;

2. Long standby time, convenient Bluetooth connection, no need to install APP, and the charging port is also compatible with the iPhone charger;

3. Now many flagship mobile phones of brands have omitted the 3.5 headphone jack, such as LeTV, Xiaomi, Samsung, and other brands can launch the CoCase multi-function protective case, which has a wider market;

4. In terms of price, 158 yuan is a little expensive, but the color range is complete and the functions are practical. Players who need to buy can consider it.

   The above is the trial report of the CoCase multi-function protective shell of the Demon Lover. Other interesting functions will be found in the future use process and will be shared with you in a timely manner.

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