What is scuiot access point?

scuiot is one of China Unicom’s apn access points. The full name of apn is Access Point Name, which is a parameter that users must configure when surfing the Internet through their mobile phones. It determines which access method the user's mobile phone uses to access the mobile network. APN is composed of two parts: 1. APN network identification, which is used to limit which external network the GGSN is connected to and selectively respond to MS requests; 2. APN operator identification, which is used to locate which network the GGSN is in. PLMN GPRS backbone network.

The operating environment of this tutorial: CoIorOS7.2 system, OPPOReno5 mobile phone.

scuiot is one of China Unicom apn access points.

Common apn access points for China Unicom IoT cards are: cuiot, 3gnet, wonet, and scuiot; among them, scuiot and cuiot are both one of China Unicom’s apn access points. China Unicom’s apn is generally set More of them are cuiot.

How to set up China Unicom apn access point

1. Open the settings on your phone, click on the SIM card and Traffic management.

#2. Click on China Unicom Card to enter.

3. Select the access point name.

#4. Click apn, enter the new apn, and click OK.

Extended knowledge: apn introduction

apn’s full name is Access Point Name, which is the user’s access point name through the mobile phone A parameter that must be configured when surfing the Internet. It determines the access method through which the user's mobile phone accesses the mobile network. Based on the access point name, you can determine what services are provided on the packet data link. These services may include: links to the public Internet; connections to WAP to forward web pages on the Internet; provision of short messages, or multimedia services.

APN is actually the domain name of GGSN, or just a prefix. After SGSN receives it, it will send it to the DNS server, which will return the resolved GGSN IP address. In HLR, each user can have multiple APNs, each with corresponding QoS, which will be sent to the SGSN during authentication. The UE may not set an APN, and the SGSN may set a default APN, which is decided by the operator.

APN is composed of two parts:

(1) APN network identification, used to limit which external network GGSN is connected to , and selective response services to MS requests. This part of the APN is mandatory.

(2) APN operator identification, defined as the PLMN GPRS backbone network used to locate the GGSN. This part of the APN is optional.

The APN operator identification is located after the APN network identification. An APN containing network identification and operator identification conforms to the DNS domain name of GGSN and cannot exceed a maximum of 100 bytes (eight bits per byte).

The syntax of APN must comply with the definition of name syntax in RFC2181 (clarified DNS specification) and RFC1035 (domain name implementation and specification). APN consists of one or more tags. The length of each tag is one byte (8 bits), indicating the number of subsequent ASCI characters (each character occupies an 8-bit byte). To comply with RFC1035, labels should only contain letters (A-Z and a-z), numbers (0-9), and dashes. The order of letters is not important. The length field value at the end of the APN cannot be zero.

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