"Folding mobile phone" Recommended 3 selections Comfortable operation with familiar numeric keys![2020 latest version]

　A few years have passed since the mainstream mobile phone became a "smartphone".The "mobile phone (feature phone)", which had previously occupied the mainstream, was out of the main lineup of mobile phone operators (carriers).

　It is a mobile phone, also called "Garakake (Galapago Sketai)", like the Galapagos Islands, which has nurtured its own ecosystem, but there are also attractiveness that smartphones do not have, such as a numeric keypad that can be firmly pushed in and input.

　In this article, we will introduce the points you want to check when choosing a folding type mobile phone that is easy to make voice calls, and recommended models based on that.

If you are particular about calling, check "Call quality"

　As one of the reasons for continuing to use mobile phones, many people have ease of telephone (voice calls).Due to the location of the receiving speaker and the utterance microphone, a folding mobile phone is the best mobile phone for calling.

　If you want a more comfortable call, check out the functions to improve your mobile phone call quality.This point is emphasized by each manufacturer, and each has its own characteristics.It is a good idea to choose one that has a function that suits you.

If you have a place to call often, check "One Touch Call"

　Some people use various places (numbers) for calling calls on mobile phones, while others often go to specific places.For example, in the latter case, if you work outside, you will be able to hang a lot on places such as "office", "boss", "support center", and if you are a child, you will be able to hang it on "father", "mother" and "home".

　If you have a place to make a phone call, you can use a mobile phone with a one -touch call key (button).If you set it in advance, you can immediately call the call destination that you often use with one touch with the same feeling as the so -called "shortened dial".

If you use it with confidence in any place, check "durability"

　If you use a mobile phone in various places, there is a risk of dropping it on the ground or floors, being damaged, wet in water, or covered with dust.We recommend that you check the durability of mobile phones, especially when using it in the outside sales or construction industry.

　As an objective indicator, the performance of waterproofing and dustproof (jin) is the "IP standard (code)" stipulated by IEC (International Electric Standard Meeting), and the Procuration Standards set as a procurement standard for impacts and environmental resistance."MIL-STD-810G" (MIL standard) is often applied mutatis mutandis.

　IP standards are represented by "IP" in two digits.The dust is a number from 0 to 6, and the first place represents the water resistance / waterproof grade in the number 0 to 8.In each case, the larger the larger the protection performance, the higher the protection performance.However, there are two types of waterproof / waterproofing grade separately.

　For MIL standards, various environmental tests are defined in the standard.It is not a compliant if you pass (pass) all tests, but you can select and take the required tests for each device or item.Mobile phones are no exception, and often describes what environmental tests have passed.The more tests you have passed, the more safe it is.

This is the recommended folding mobile phone!

　Based on the above points, we will introduce three recommended folding mobile phones.

arrowsケータイ F-03L（NTTドコモ／富士通コネクテッドテクノロジーズ）

　It is a folding mobile phone that focuses on the ease of viewing of the letters and the sound of audio.It has a "call memo" function that allows you to record calls, so you can leave the conversation content without handwriting by hand.It also has a "one push open" that opens the screen just by pressing the button.

　After ensuring the waterproof performance of IPX5 / 8th grade and the dustproof performance of the IP6X grade, we also pass 17 types of tests specified in the MIL standard.You can also use 1Seg (TV) and Osaifu -Keitai ( *).

　Recommended for those who want a smart mobile phone with a smart look.

( *) There are some non -compatible services such as "Mobile Suica"

GRATINA KYF39（au／京セラ）

　It is a folding mobile phone that can be selected from 5 vivid body colors.The voice call function is also substantial, and it is decided whether to save the call audio at the end of the call (up to 60 minutes, setting required), and if the same opponent continues twice in 10 minutes, the same is continued.It also supports "step -up incoming calls" that enhances the incoming noise and vibrates the vibe for a long time.

　The latest "USB Type-C" is the latest "USB Type-C", which can also be used for a message service " + message (plus message)" in addition to the latest "USB Type-C".It is also attractive.It has waterproof and dustproof performance and impact resistance, but does not have Osaifu -Keitai or 1Seg.

AQUOSケータイ3（ソフトバンク／京セラ）

　It is a folding mobile phone that appeals to be "long -lasting", and can be purchased in both SoftBank brands and Y! Mobile brands.The waterproof performance of IPX5 / 8th grade and the dustproof performance of IP6X grade are ensured, and the drop -resistant performance specified in the MIL standard is secured.

　It has a voice recorder function, so you can get records such as meetings as well as calls.Although it supports 1Seg, it does not support Osaifu -Keitai.