A method for switching between networks, executed by an embedded universal integrated circuit card, eUICC, the method comprising: if a notification that a signal of a first operator network is lost is received from a user equipment, UE, determining an available second operator network, and sending a temporary operational profile request to a remote management platform of the second operator network; receiving a temporary operational profile and a validity period of the temporary operational profile that are returned by the remote management platform of the second operator network; and instructing the UE to detect signal strength of the first operator network, and accessing the second operator network by using the temporary operational profile; wherein the method further comprises: before the validity period of the temporary operational profile expires, if it is determined according to the signal strength of the first operator network that the signal of the first operator network is recovered, re-accessing the first operator network; if the validity period of the temporary operational profile expires without receipt of a notification from the UE that the signal of the first operator network is recovered, sending a temporary operational profile update request to the remote management platform; and receiving a temporary operational profile update response returned by the remote management platform, wherein the temporary operational profile update response carries a new temporary operational profile or a new validity period that is allocated by the remote management platform; and continuing to use the second operator network by using the new temporary operational profile or according to the new validity period. if a notification that a signal of a first operator network is lost is received from a user equipment, UE, determining an available second operator network, and sending a temporary operational profile request to a remote management platform of the second operator network; receiving a temporary operational profile and a validity period of the temporary operational profile that are returned by the remote management platform of the second operator network; and instructing the UE to detect signal strength of the first operator network, and accessing the second operator network by using the temporary operational profile; wherein the method further comprises: before the validity period of the temporary operational profile expires, if it is determined according to the signal strength of the first operator network that the signal of the first operator network is recovered, re-accessing the first operator network; if the validity period of the temporary operational profile expires without receipt of a notification from the UE that the signal of the first operator network is recovered, sending a temporary operational profile update request to the remote management platform; and receiving a temporary operational profile update response returned by the remote management platform, wherein the temporary operational profile update response carries a new temporary operational profile or a new validity period that is allocated by the remote management platform; and continuing to use the second operator network by using the new temporary operational profile or according to the new validity period. before the validity period of the temporary operational profile expires, if it is determined according to the signal strength of the first operator network that the signal of the first operator network is recovered, re-accessing the first operator network; if the validity period of the temporary operational profile expires without receipt of a notification from the UE that the signal of the first operator network is recovered, sending a temporary operational profile update request to the remote management platform; and receiving a temporary operational profile update response returned by the remote management platform, wherein the temporary operational profile update response carries a new temporary operational profile or a new validity period that is allocated by the remote management platform; and continuing to use the second operator network by using the new temporary operational profile or according to the new validity period.